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CVE-2026-91963

FreeRDP 2.0.0 through 3.30.0 Uninitialized Heap Memory Disclosure via urbdrc

7.1 HighFix available

CVE-2026-91963 is a high vulnerability (CVSS 7.1) in Freerdp, published September 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 48th percentile. Fixed in freerdp3 3.31.0+dfsg-1.

What does this mean?
Severity
7.1 HighCVSS 4.0, CVE List
Exploit chance
0.58%EPSS, 48th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
3.31.0+dfsg-1freerdp3 +176 more

Description

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.58%Down 0.1 points since Sep 16, 2026
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
freerdp
AlmaLinux:10
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-devel
AlmaLinux:10
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-libs
AlmaLinux:10
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-server
AlmaLinux:10
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
libwinpr
AlmaLinux:10
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
libwinpr-devel
AlmaLinux:10
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp
AlmaLinux:8
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-devel
AlmaLinux:8
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-libs
AlmaLinux:8
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
libwinpr
AlmaLinux:8
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
Show 167 moreShow less
Affected packages
PackageAffectedFixed
libwinpr-devel
AlmaLinux:8
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp
AlmaLinux:9
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-devel
AlmaLinux:9
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-libs
AlmaLinux:9
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
libwinpr
AlmaLinux:9
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
libwinpr-devel
AlmaLinux:9
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp
TuxCare:CentOS:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
freerdp-devel
TuxCare:CentOS:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
freerdp-libs
TuxCare:CentOS:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
libwinpr
TuxCare:CentOS:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
libwinpr-devel
TuxCare:CentOS:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
freerdp
TuxCare:OracleLinux:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
freerdp-devel
TuxCare:OracleLinux:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
freerdp-libs
TuxCare:OracleLinux:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
libwinpr
TuxCare:OracleLinux:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
libwinpr-devel
TuxCare:OracleLinux:7
From an advisory covering 6 CVEs
before 2.1.1-5.0.9.el7_9.tuxcare.els5
2.1.1-5.0.9.el7_9.tuxcare.els5
freerdp2
Debian:12
All versions, plus listed versions
2.10.0+dfsg1-12.10.0+dfsg1-1.12.11.2+dfsg1-12.11.2+dfsg1-1.1~exp12.11.2+dfsg1-1.1~exp2
Show 8 moreShow less
2.11.5+dfsg1-12.11.7+dfsg1-12.11.7+dfsg1-22.11.7+dfsg1-32.11.7+dfsg1-42.11.7+dfsg1-52.11.7+dfsg1-62.11.7+dfsg1-6~deb12u1
None known
freerdp3
Debian:13
All versions, plus listed versions
3.15.0+dfsg-2.13.15.0+dfsg-2.1+deb13u13.15.0+dfsg-2.1+deb13u23.15.0+dfsg-2.1+deb13u33.16.0+dfsg-1
Show 42 moreShow less
3.16.0+dfsg-23.17.0+dfsg-13.17.1+dfsg-13.17.1+dfsg-23.17.2+dfsg-13.17.2+dfsg-23.17.2+dfsg-33.18.0+dfsg-13.19.0+dfsg-13.19.1+dfsg-13.20.0+dfsg-13.20.2+dfsg-13.21.0+dfsg-13.22.0+dfsg-13.22.0+dfsg-1~bpo13+03.22.0+dfsg-1~bpo13+13.22.0+dfsg-33.23.0+dfsg-13.23.0+dfsg-1~bpo13+13.24.0+dfsg-13.24.0+dfsg-23.24.1+dfsg-13.24.2+dfsg-13.24.2+dfsg-1~bpo13+13.25.0+dfsg-13.25.0+dfsg-23.25.0+dfsg-33.25.0+dfsg-43.25.0+dfsg-53.26.0+dfsg-13.26.0+dfsg-1~bpo13+13.27.0+dfsg-13.27.1+dfsg-13.28.0+dfsg-13.28.0+dfsg-23.29.0+dfsg-13.30.0+dfsg-13.30.0+dfsg-1~bpo13+13.31.0+dfsg-13.31.1+dfsg-13.31.1+dfsg-1~bpo13+13.32.0+dfsg-1
None known
freerdp3
Debian:14
before 3.31.0+dfsg-1, plus listed versions
3.15.0+dfsg-2.13.16.0+dfsg-13.16.0+dfsg-23.17.0+dfsg-13.17.1+dfsg-1
Show 35 moreShow less
3.17.1+dfsg-23.17.2+dfsg-13.17.2+dfsg-23.17.2+dfsg-33.18.0+dfsg-13.19.0+dfsg-13.19.1+dfsg-13.20.0+dfsg-13.20.2+dfsg-13.21.0+dfsg-13.22.0+dfsg-13.22.0+dfsg-1~bpo13+03.22.0+dfsg-1~bpo13+13.22.0+dfsg-33.23.0+dfsg-13.23.0+dfsg-1~bpo13+13.24.0+dfsg-13.24.0+dfsg-23.24.1+dfsg-13.24.2+dfsg-13.24.2+dfsg-1~bpo13+13.25.0+dfsg-13.25.0+dfsg-23.25.0+dfsg-33.25.0+dfsg-43.25.0+dfsg-53.26.0+dfsg-13.26.0+dfsg-1~bpo13+13.27.0+dfsg-13.27.1+dfsg-13.28.0+dfsg-13.28.0+dfsg-23.29.0+dfsg-13.30.0+dfsg-13.30.0+dfsg-1~bpo13+1
3.31.0+dfsg-1
freerdp
openEuler:22.03-LTS-SP4
From an advisory covering 5 CVEs
before 2.11.8-11.oe2203sp4
2.11.8-11.oe2203sp4
freerdp
openEuler:24.03-LTS-SP1
From an advisory covering 5 CVEs
before 2.11.8-11.oe2403sp1
2.11.8-11.oe2403sp1
freerdp
openEuler:24.03-LTS-SP3
From an advisory covering 5 CVEs
before 2.11.8-11.oe2403sp3
2.11.8-11.oe2403sp3
freerdp
openEuler:24.03-LTS-SP4
From an advisory covering 5 CVEs
before 2.11.8-11.oe2403sp4
2.11.8-11.oe2403sp4
freerdp
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-debuginfo
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-debugsource
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-libs
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-libs-debuginfo
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-server-debuginfo
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
libwinpr
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
libwinpr-debuginfo
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-devel
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp-server
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
libwinpr-devel
Red Hat:enterprise_linux:10.2
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-debuginfo
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-debugsource
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-libs
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-libs-debuginfo
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
libwinpr
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
libwinpr-debuginfo
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
libwinpr-devel
Red Hat:enterprise_linux:8::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-debuginfo
Red Hat:enterprise_linux:8::crb
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-debugsource
Red Hat:enterprise_linux:8::crb
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-devel
Red Hat:enterprise_linux:8::crb
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp-libs-debuginfo
Red Hat:enterprise_linux:8::crb
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
libwinpr-debuginfo
Red Hat:enterprise_linux:8::crb
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp
Red Hat:enterprise_linux:9::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-debuginfo
Red Hat:enterprise_linux:9::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-debugsource
Red Hat:enterprise_linux:9::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-libs
Red Hat:enterprise_linux:9::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-libs-debuginfo
Red Hat:enterprise_linux:9::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
libwinpr
Red Hat:enterprise_linux:9::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
libwinpr-debuginfo
Red Hat:enterprise_linux:9::appstream
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-debuginfo
Red Hat:enterprise_linux:9::crb
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-debugsource
Red Hat:enterprise_linux:9::crb
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-devel
Red Hat:enterprise_linux:9::crb
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp-libs-debuginfo
Red Hat:enterprise_linux:9::crb
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
libwinpr-debuginfo
Red Hat:enterprise_linux:9::crb
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
libwinpr-devel
Red Hat:enterprise_linux:9::crb
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-debuginfo
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-debugsource
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-libs
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-libs-debuginfo
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
libwinpr
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
libwinpr-debuginfo
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
libwinpr-devel
Red Hat:rhel_e4s:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-debuginfo
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-debugsource
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-libs
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp-libs-debuginfo
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
libwinpr
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
libwinpr-debuginfo
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
libwinpr-devel
Red Hat:rhel_tus:8.8::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-12.el8_8.13
2:2.2.0-12.el8_8.13
freerdp
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-debuginfo
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-debugsource
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-libs
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-libs-debuginfo
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
libwinpr
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
libwinpr-debuginfo
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
libwinpr-devel
Red Hat:rhel_aus:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-debuginfo
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-debugsource
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-libs
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp-libs-debuginfo
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
libwinpr
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
libwinpr-debuginfo
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
libwinpr-devel
Red Hat:rhel_eus_long_life:8.4::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-14.el8_4.5
2:2.2.0-14.el8_4.5
freerdp
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-debuginfo
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-debugsource
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-libs
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-libs-debuginfo
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
libwinpr
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
libwinpr-debuginfo
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
libwinpr-devel
Red Hat:rhel_aus:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-debuginfo
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-debugsource
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-libs
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp-libs-debuginfo
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
libwinpr
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
libwinpr-debuginfo
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
libwinpr-devel
Red Hat:rhel_eus_long_life:8.6::appstream
From an advisory covering 6 CVEs
before 2:2.2.0-7.el8_6.14
2:2.2.0-7.el8_6.14
freerdp
Red Hat:rhel_els:7
From an advisory covering 8 CVEs
before 0:2.1.1-5.el7_9.14
0:2.1.1-5.el7_9.14
freerdp-debuginfo
Red Hat:rhel_els:7
From an advisory covering 8 CVEs
before 0:2.1.1-5.el7_9.14
0:2.1.1-5.el7_9.14
freerdp-libs
Red Hat:rhel_els:7
From an advisory covering 8 CVEs
before 0:2.1.1-5.el7_9.14
0:2.1.1-5.el7_9.14
libwinpr
Red Hat:rhel_els:7
From an advisory covering 8 CVEs
before 0:2.1.1-5.el7_9.14
0:2.1.1-5.el7_9.14
freerdp-devel
Red Hat:rhel_els:7
From an advisory covering 8 CVEs
before 0:2.1.1-5.el7_9.14
0:2.1.1-5.el7_9.14
libwinpr-devel
Red Hat:rhel_els:7
From an advisory covering 8 CVEs
before 0:2.1.1-5.el7_9.14
0:2.1.1-5.el7_9.14
freerdp
Red Hat:enterprise_linux:9::appstream
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-debuginfo
Red Hat:enterprise_linux:9::appstream
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-debugsource
Red Hat:enterprise_linux:9::appstream
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-libs
Red Hat:enterprise_linux:9::appstream
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-libs-debuginfo
Red Hat:enterprise_linux:9::appstream
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
libwinpr
Red Hat:enterprise_linux:9::appstream
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
libwinpr-debuginfo
Red Hat:enterprise_linux:9::appstream
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-debuginfo
Red Hat:enterprise_linux:9::crb
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-debugsource
Red Hat:enterprise_linux:9::crb
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-devel
Red Hat:enterprise_linux:9::crb
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp-libs-debuginfo
Red Hat:enterprise_linux:9::crb
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
libwinpr-debuginfo
Red Hat:enterprise_linux:9::crb
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
libwinpr-devel
Red Hat:enterprise_linux:9::crb
From an advisory covering 7 CVEs
before 2:2.11.7-13.el9_9.2
2:2.11.7-13.el9_9.2
freerdp
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp-debuginfo
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp-debugsource
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp-libs
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp-libs-debuginfo
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp-server-debuginfo
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
libwinpr
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
libwinpr-debuginfo
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp-devel
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp-server
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
libwinpr-devel
Red Hat:enterprise_linux:10.3
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_3
2:3.32.2-1.el10_3
freerdp
Red Hat:rhel_e4s:9.4::appstream
From an advisory covering 6 CVEs
before 2:2.11.2-1.el9_4.13
2:2.11.2-1.el9_4.13
freerdp-debuginfo
Red Hat:rhel_e4s:9.4::appstream
From an advisory covering 6 CVEs
before 2:2.11.2-1.el9_4.13
2:2.11.2-1.el9_4.13
freerdp-debugsource
Red Hat:rhel_e4s:9.4::appstream
From an advisory covering 6 CVEs
before 2:2.11.2-1.el9_4.13
2:2.11.2-1.el9_4.13
freerdp-libs
Red Hat:rhel_e4s:9.4::appstream
From an advisory covering 6 CVEs
before 2:2.11.2-1.el9_4.13
2:2.11.2-1.el9_4.13
freerdp-libs-debuginfo
Red Hat:rhel_e4s:9.4::appstream
From an advisory covering 6 CVEs
before 2:2.11.2-1.el9_4.13
2:2.11.2-1.el9_4.13
libwinpr
Red Hat:rhel_e4s:9.4::appstream
From an advisory covering 6 CVEs
before 2:2.11.2-1.el9_4.13
2:2.11.2-1.el9_4.13
libwinpr-debuginfo
Red Hat:rhel_e4s:9.4::appstream
From an advisory covering 6 CVEs
before 2:2.11.2-1.el9_4.13
2:2.11.2-1.el9_4.13
freerdp
Rocky Linux:10
From an advisory covering 11 CVEs
before 2:3.10.3-12.el10_2.14
2:3.10.3-12.el10_2.14
freerdp
Rocky Linux:8
From an advisory covering 6 CVEs
before 2:2.11.7-14.el8_10
2:2.11.7-14.el8_10
freerdp
Rocky Linux:9
From an advisory covering 6 CVEs
before 2:2.11.7-7.el9_8.8
2:2.11.7-7.el9_8.8
freerdp
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp-server-debuginfo
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp-server
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
libwinpr-debuginfo
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp-libs
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
libwinpr
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp-devel
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp-debugsource
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp-debuginfo
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp-libs-debuginfo
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
libwinpr-devel
Rocky Linux:10
From an advisory covering 48 CVEs
before 2:3.32.2-1.el10_2
2:3.32.2-1.el10_2
freerdp
Ubuntu:16.04:LTS
All versions, plus listed versions
1.1.0~git20140921.1.440916e+dfsg1-5ubuntu11.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.21.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.31.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4
None known
freerdp2
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
2.0.0~git20170725.1.1648deb+dfsg1-12.0.0~git20170725.1.1648deb+dfsg1-52.0.0~git20170725.1.1648deb+dfsg1-5ubuntu12.0.0~git20170725.1.1648deb+dfsg1-5ubuntu22.0.0~git20170725.1.1648deb+dfsg1-6
Show 14 moreShow less
2.0.0~git20170725.1.1648deb+dfsg1-6build12.0.0~git20170725.1.1648deb+dfsg1-72.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.12.1.1+dfsg1-0ubuntu0.18.04.12.2.0+dfsg1-0ubuntu0.18.04.12.2.0+dfsg1-0ubuntu0.18.04.22.2.0+dfsg1-0ubuntu0.18.04.32.2.0+dfsg1-0ubuntu0.18.04.42.2.0+dfsg1-0ubuntu0.18.04.4+esm12.2.0+dfsg1-0ubuntu0.18.04.4+esm22.2.0+dfsg1-0ubuntu0.18.04.4+esm32.2.0+dfsg1-0ubuntu0.18.04.4+esm42.2.0+dfsg1-0ubuntu0.18.04.4+esm52.2.0+dfsg1-0ubuntu0.18.04.4+esm6
None known
freerdp
Ubuntu:18.04:LTS
All versions, plus listed versions
1.1.0~git20140921.1.440916e+dfsg1-15ubuntu11.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.11.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
None known
freerdp2
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
2.0.0~git20190204.1.2693389a+dfsg1-12.0.0~git20190204.1.2693389a+dfsg1-22.0.0~git20190204.1.2693389a+dfsg1-2build12.0.0~git20190204.1.2693389a+dfsg1-2build22.1.1+dfsg1-0ubuntu0.20.04.1
Show 12 moreShow less
2.2.0+dfsg1-0ubuntu0.20.04.12.2.0+dfsg1-0ubuntu0.20.04.22.2.0+dfsg1-0ubuntu0.20.04.32.2.0+dfsg1-0ubuntu0.20.04.42.2.0+dfsg1-0ubuntu0.20.04.52.2.0+dfsg1-0ubuntu0.20.04.62.6.1+dfsg1-0ubuntu0.20.04.12.6.1+dfsg1-0ubuntu0.20.04.22.6.1+dfsg1-0ubuntu0.20.04.2+esm12.6.1+dfsg1-0ubuntu0.20.04.2+esm22.6.1+dfsg1-0ubuntu0.20.04.2+esm32.6.1+dfsg1-0ubuntu0.20.04.2+esm4
None known
freerdp2
Ubuntu:22.04:LTS
All versions, plus listed versions
2.3.0+dfsg1-2build12.3.0+dfsg1-2ubuntu12.3.0+dfsg1-2ubuntu22.4.1+dfsg1-12.4.1+dfsg1-1ubuntu1
Show 18 moreShow less
2.4.1+dfsg1-1ubuntu22.5.0+dfsg1-12.6.0+dfsg1-12.6.1+dfsg1-12.6.1+dfsg1-32.6.1+dfsg1-3ubuntu12.6.1+dfsg1-3ubuntu22.6.1+dfsg1-3ubuntu2.12.6.1+dfsg1-3ubuntu2.22.6.1+dfsg1-3ubuntu2.32.6.1+dfsg1-3ubuntu2.42.6.1+dfsg1-3ubuntu2.52.6.1+dfsg1-3ubuntu2.62.6.1+dfsg1-3ubuntu2.72.6.1+dfsg1-3ubuntu2.82.6.1+dfsg1-3ubuntu2.92.6.1+dfsg1-3ubuntu2.102.6.1+dfsg1-3ubuntu2.11
None known
freerdp3
Ubuntu:24.04:LTS
before 3.31.0+dfsg-0ubuntu0.24.04.1, plus listed versions
3.4.0+dfsg1-0ubuntu23.4.0+dfsg1-0ubuntu33.4.0+dfsg1-0ubuntu43.5.0+dfsg1-0ubuntu13.5.1+dfsg1-0ubuntu1
Show 7 moreShow less
3.5.1+dfsg1-0ubuntu1.13.5.1+dfsg1-0ubuntu1.23.5.1+dfsg1-0ubuntu1.43.5.1+dfsg1-0ubuntu1.53.5.1+dfsg1-0ubuntu1.63.30.0+dfsg-0ubuntu0.24.04.13.30.0+dfsg-0ubuntu0.24.04.2
3.31.0+dfsg-0ubuntu0.24.04.1
freerdp2
Ubuntu:Pro:24.04:LTS
All versions, plus listed versions
2.10.0+dfsg1-1.1ubuntu12.11.2+dfsg1-12.11.2+dfsg1-1build12.11.2+dfsg1-1build32.11.5+dfsg1-1build1
Show 7 moreShow less
2.11.5+dfsg1-1build22.11.5+dfsg1-1ubuntu0.1~esm12.11.5+dfsg1-1ubuntu0.1~esm22.11.5+dfsg1-1ubuntu0.1~esm32.11.5+dfsg1-1ubuntu0.1~esm42.11.5+dfsg1-1ubuntu0.1~esm52.11.5+dfsg1-1ubuntu0.1~esm6
None known
freerdp3
Ubuntu:26.04:LTS
before 3.31.0+dfsg-0ubuntu0.26.04.1, plus listed versions
3.16.0+dfsg-23.18.0+dfsg-1ubuntu13.19.0+dfsg-13.19.1+dfsg-13.20.0+dfsg-1
Show 8 moreShow less
3.20.2+dfsg-13.21.0+dfsg-13.22.0+dfsg-13.24.1+dfsg-1ubuntu13.24.2+dfsg-1ubuntu13.24.2+dfsg-1ubuntu1.13.30.0+dfsg-0ubuntu0.26.04.13.30.0+dfsg-0ubuntu0.26.04.2
3.31.0+dfsg-0ubuntu0.26.04.1

What each source reports

CVE List Score used7.1

FreeRDP 2.0.0 through 3.30.0 Uninitialized Heap Memory Disclosure via urbdrc

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Record
CVE-2026-91963
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-457
Updated
2026-11-02
EUVDEUVD-2026-786397.1

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Record
EUVD-2026-78639
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-v76r-r3hh-2mwm7.1

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in...

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Record
GHSA-v76r-r3hh-2mwm
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-457
Updated
2026-11-02
NVD7.1

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Record
CVE-2026-91963
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-457
Updated
2026-11-02
OSV7.1

FreeRDP 2.0.0 through 3.30.0 Uninitialized Heap Memory Disclosure via urbdrc

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Record
CVE-2026-91963
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-457
Updated
2026-11-02
OSVDEBIAN-CVE-2026-919636.5

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Record
DEBIAN-CVE-2026-91963
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
Show 26 moreShow less
OSVOESA-2026-46538.7

freerdp security update

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server Redirection PDU with an oversized LB_LOAD_BALANCE_INFO value to overflow the buffer with attacker-controlled content, causing denial of service or heap corruption before authentication completes.(CVE-2026-91953)

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted InterfaceNumber values to read past allocated heap memory and crash the client.(CVE-2026-91956)

FreeRDP is an implementation of the Remote Desktop Protocol (RDP) open sourced by the FreeRDP team. FreeRDP versions before 3.31.0 have a buffer error vulnerability. This vulnerability originates from buffer over-reading in the rts_read_result function in the RPC gateway transport parser. An attacker can trigger an out-of-bounds read by sending a specially crafted BIND_ACK PDU with truncated result entries, causing the process to terminate.(CVE-2026-91959)

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.(CVE-2026-91963)

FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can trigger the overflow by sending an arbitrary-length field that gets written to a fixed 512-byte buffer without validation, causing client crashes or potential code execution when chained with memory disclosure.(CVE-2026-91964)

Record
OESA-2026-4653
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-46548.7

freerdp security update

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server Redirection PDU with an oversized LB_LOAD_BALANCE_INFO value to overflow the buffer with attacker-controlled content, causing denial of service or heap corruption before authentication completes.(CVE-2026-91953)

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted InterfaceNumber values to read past allocated heap memory and crash the client.(CVE-2026-91956)

FreeRDP is an implementation of the Remote Desktop Protocol (RDP) open sourced by the FreeRDP team. FreeRDP versions before 3.31.0 have a buffer error vulnerability. This vulnerability originates from buffer over-reading in the rts_read_result function in the RPC gateway transport parser. An attacker can trigger an out-of-bounds read by sending a specially crafted BIND_ACK PDU with truncated result entries, causing the process to terminate.(CVE-2026-91959)

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.(CVE-2026-91963)

FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can trigger the overflow by sending an arbitrary-length field that gets written to a fixed 512-byte buffer without validation, causing client crashes or potential code execution when chained with memory disclosure.(CVE-2026-91964)

Record
OESA-2026-4654
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-46558.7

freerdp security update

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server Redirection PDU with an oversized LB_LOAD_BALANCE_INFO value to overflow the buffer with attacker-controlled content, causing denial of service or heap corruption before authentication completes.(CVE-2026-91953)

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted InterfaceNumber values to read past allocated heap memory and crash the client.(CVE-2026-91956)

FreeRDP is an implementation of the Remote Desktop Protocol (RDP) open sourced by the FreeRDP team. FreeRDP versions before 3.31.0 have a buffer error vulnerability. This vulnerability originates from buffer over-reading in the rts_read_result function in the RPC gateway transport parser. An attacker can trigger an out-of-bounds read by sending a specially crafted BIND_ACK PDU with truncated result entries, causing the process to terminate.(CVE-2026-91959)

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.(CVE-2026-91963)

FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can trigger the overflow by sending an arbitrary-length field that gets written to a fixed 512-byte buffer without validation, causing client crashes or potential code execution when chained with memory disclosure.(CVE-2026-91964)

Record
OESA-2026-4655
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-46568.7

freerdp security update

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

FreeRDP versions before 3.31.0 contain a heap buffer overflow vulnerability in nego_send_negotiation_request() that fails to validate the LB_LOAD_BALANCE_INFO field length before writing to a fixed 512-byte buffer. A malicious RDP server or man-in-the-middle can send a Server Redirection PDU with an oversized LB_LOAD_BALANCE_INFO value to overflow the buffer with attacker-controlled content, causing denial of service or heap corruption before authentication completes.(CVE-2026-91953)

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted InterfaceNumber values to read past allocated heap memory and crash the client.(CVE-2026-91956)

FreeRDP is an implementation of the Remote Desktop Protocol (RDP) open sourced by the FreeRDP team. FreeRDP versions before 3.31.0 have a buffer error vulnerability. This vulnerability originates from buffer over-reading in the rts_read_result function in the RPC gateway transport parser. An attacker can trigger an out-of-bounds read by sending a specially crafted BIND_ACK PDU with truncated result entries, causing the process to terminate.(CVE-2026-91959)

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.(CVE-2026-91963)

FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can trigger the overflow by sending an arbitrary-length field that gets written to a fixed 512-byte buffer without validation, causing client crashes or potential code execution when chained with memory disclosure.(CVE-2026-91964)

Record
OESA-2026-4656
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVRHSA-2026:755708.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:75570
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:767478.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:76747
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:767558.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:76755
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:935378.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:93537
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:935388.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:93538
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:935498.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:93549
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:935598.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:93559
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:984698.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:98469
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:985989.3

Red Hat Security Advisory: freerdp security, bug fix, and enhancement update

Record
RHSA-2026:98598
CVSS 3.1
9.3 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Updated
2026-11-13
OSVRHSA-2026:990348.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:99034
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-13
OSVRHSA-2026:990358.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:99035
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-14
OSVRHSA-2026:995168.8

Red Hat Security Advisory: freerdp security update

Record
RHSA-2026:99516
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-14
OSVRLSA-2026:755708.8

Important: freerdp security update

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • FreeRDP: freerdp-proxy: FreeRDP: Information disclosure via uninitialized heap memory in Save Session Info PDU (CVE-2026-85089)

  • FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)

  • FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964)

  • FreeRDP: FreeRDP: Information Disclosure via RDPGFX ResetGraphics PDU (CVE-2026-91946)

  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)

  • FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)

  • FreeRDP: FreeRDP: Use-after-free vulnerability in DRDYNVC parser leads to memory corruption (CVE-2026-91947)

  • FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)

  • FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure (CVE-2026-91950)

  • FreeRDP: FreeRDP: Denial of Service via integer overflow and double free in WinPR (CVE-2026-91960)

  • FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap corruption. (CVE-2026-91953)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:75570
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRLSA-2026:767478.8

Important: freerdp security update

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)

  • FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964)

  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)

  • FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)

  • FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)

  • FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap corruption. (CVE-2026-91953)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:76747
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRLSA-2026:767558.8

Important: freerdp security update

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)

  • FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964)

  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)

  • FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)

  • FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)

  • FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap corruption. (CVE-2026-91953)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:76755
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRLSA-2026:985989.3

Critical: freerdp security, bug fix, and enhancement update

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • FreeRDP: freerdp-proxy: FreeRDP: Information disclosure via uninitialized heap memory in Save Session Info PDU (CVE-2026-85089)

  • FreeRDP: FreeRDP: Arbitrary code execution via oversized channel messages in SHOW_PROTOCOL (CVE-2026-91948)

  • FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)

  • FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964)

  • FreeRDP: FreeRDP: Information Disclosure via RDPGFX ResetGraphics PDU (CVE-2026-91946)

  • freerdp: FreeRDP 3.0.0 through 3.30.0 Protocol Negotiation Bypass (CVE-2026-91949)

  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)

  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds write in urbdrc client channel (CVE-2026-91951)

  • FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)

  • FreeRDP: FreeRDP: Use-after-free vulnerability in DRDYNVC parser leads to memory corruption (CVE-2026-91947)

  • FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)

  • FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure (CVE-2026-91950)

  • FreeRDP: FreeRDP: Denial of Service via integer overflow and double free in WinPR (CVE-2026-91960)

  • FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap corruption. (CVE-2026-91953)

  • FreeRDP: FreeRDP: Denial of Service due to out-of-bounds read in smartcard response processing (CVE-2026-91945)

  • freerdp: FreeRDP: Denial of Service via uninitialized progressive tile handling (CVE-2026-109242)

  • freerdp: FreeRDP 3.0.0-beta1 before 3.32.0 Use-After-Free via Smartcard Connect (CVE-2026-109676)

  • freerdp: FreeRDP: Unauthenticated keystroke injection via premature input dispatch (CVE-2026-110838)

  • freerdp: freerdp: Denial of Service via file descriptor exhaustion in serial device handling (CVE-2026-110830)

  • freerdp: freerdp: Denial of Service via heap-based buffer overflow during MP3 audio decoding (CVE-2026-110837)

  • freerdp: freerdp: Denial of Service via unbounded memory consumption during RDPDR reassembly (CVE-2026-110833)

  • freerdp: FreeRDP: Denial of Service via grayscale JPEG clipboard conversion (CVE-2026-110839)

  • freerdp: freerdp: Denial of Service via memory exhaustion in NLA frame parser (CVE-2026-111378)

  • freerdp: FreeRDP: Arbitrary code execution via crafted persistent cache file (CVE-2026-111379)

  • freerdp: freerdp: Arbitrary code execution via crafted persistent cache file (CVE-2026-111381)

  • freerdp: freerdp: Arbitrary code execution via crafted display frames (CVE-2026-111382)

  • freerdp: freerdp: Denial of Service via heap out-of-bounds write in NTLM authentication (CVE-2026-111880)

  • freerdp: FreeRDP: heap buffer overflow in server rdpsnd via crafted audio formats (CVE-2026-114045)

  • freerdp: FreeRDP: Denial of Service via malformed image clipboard payloads (CVE-2026-121386)

  • freerdp: freerdp: Denial of Service via zero-width graphics reset (CVE-2026-121402)

  • freerdp: freerdp: Denial of Service via zero-length dynamic virtual channel messages (CVE-2026-121404)

  • freerdp: freerdp: Denial of Service via uncontrolled memory allocation in dynamic virtual channels (CVE-2026-121388)

  • freerdp: FreeRDP: Denial of Service via assertion failure in RemoteFX decoder (CVE-2026-121394)

Bug Fix(es) and Enhancement(s):

  • Rebase FreeRDP to 3.32.2 or newer [rhel-10.3.z] (JIRA:Rocky Linux-277443)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:98598
CVSS 3.1
9.3 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Updated
2026-11-13
OSVUBUNTU-CVE-2026-919637.1

FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.

Record
UBUNTU-CVE-2026-91963
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVALSA-2026:75570No score

Important: freerdp security update

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • FreeRDP: freerdp-proxy: FreeRDP: Information disclosure via uninitialized heap memory in Save Session Info PDU (CVE-2026-85089)
  • FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)
  • FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964)
  • FreeRDP: FreeRDP: Information Disclosure via RDPGFX ResetGraphics PDU (CVE-2026-91946)
  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)
  • FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)
  • FreeRDP: FreeRDP: Use-after-free vulnerability in DRDYNVC parser leads to memory corruption (CVE-2026-91947)
  • FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)
  • FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure (CVE-2026-91950)
  • FreeRDP: FreeRDP: Denial of Service via integer overflow and double free in WinPR (CVE-2026-91960)
  • FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap corruption. (CVE-2026-91953)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:75570
Updated
2026-11-02
OSVALSA-2026:76747No score

Important: freerdp security update

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)
  • FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964)
  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)
  • FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)
  • FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)
  • FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap corruption. (CVE-2026-91953)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:76747
Updated
2026-11-02
OSVALSA-2026:76755No score

Important: freerdp security update

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • FreeRDP: FreeRDP: Denial of Service via crafted Surface Bits command (CVE-2026-91954)
  • FreeRDP: FreeRDP: Remote code execution via heap buffer overflow in Server Redirection PDU (CVE-2026-91964)
  • FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel (CVE-2026-91956)
  • FreeRDP: FreeRDP: Remote code execution via uninitialized heap memory disclosure (CVE-2026-91963)
  • FreeRDP: FreeRDP: Denial of Service due to buffer over-read in RPC gateway (CVE-2026-91959)
  • FreeRDP: FreeRDP: Heap buffer overflow via oversized LB_LOAD_BALANCE_INFO routing token can lead to heap corruption. (CVE-2026-91953)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:76755
Updated
2026-11-02
OSVCLSA-2026-1791568721No score

freerdp: Fix of 6 CVEs

  • CVE-2026-91953, CVE-2026-91964: bound every write in nego_send_negotiation_request() with Stream_EnsureRemainingCapacity(); the routing token taken from the server's LB_LOAD_BALANCE_INFO was written into a fixed 512 byte stream unchecked, overflowing the heap allocation
  • CVE-2026-91963: allocate wStream buffers with calloc() instead of malloc(), so the urbdrc completion path can no longer return the untouched tail of a freshly allocated buffer - and with it live heap pointers - to the server when a USB transfer returns short
  • CVE-2026-91959: require four remaining bytes in rts_read_result() before reading result and reason; a malicious RD Gateway could end a BIND_ACK fragment two bytes into a result and make the parser over-read it
  • CVE-2026-91957: do not free the SMARTCARD_DEVICE on the DeviceServiceEntry() failure path once RegisterDevice() has succeeded; devman kept the freed pointer and dereferenced DEVICE.Free through it on channel teardown
  • CVE-2026-91956: bound the interface, alternate-setting and endpoint indices in func_get_ep_desc(); it indexed by array position while the validator indexed by InterfaceNumber, so a permuted descriptor produced an out-of-bounds read of a pointer that was then dereferenced
Record
CLSA-2026-1791568721
Updated
2026-11-02
OSVCLSA-2026-1791569293No score

freerdp: Fix of 6 CVEs

  • CVE-2026-91953, CVE-2026-91964: bound every write in nego_send_negotiation_request() with Stream_EnsureRemainingCapacity(); the routing token taken from the server's LB_LOAD_BALANCE_INFO was written into a fixed 512 byte stream unchecked, overflowing the heap allocation
  • CVE-2026-91963: allocate wStream buffers with calloc() instead of malloc(), so the urbdrc completion path can no longer return the untouched tail of a freshly allocated buffer - and with it live heap pointers - to the server when a USB transfer returns short
  • CVE-2026-91959: require four remaining bytes in rts_read_result() before reading result and reason; a malicious RD Gateway could end a BIND_ACK fragment two bytes into a result and make the parser over-read it
  • CVE-2026-91957: do not free the SMARTCARD_DEVICE on the DeviceServiceEntry() failure path once RegisterDevice() has succeeded; devman kept the freed pointer and dereferenced DEVICE.Free through it on channel teardown
  • CVE-2026-91956: bound the interface, alternate-setting and endpoint indices in func_get_ep_desc(); it indexed by array position while the validator indexed by InterfaceNumber, so a permuted descriptor produced an out-of-bounds read of a pointer that was then dereferenced
Record
CLSA-2026-1791569293
Updated
2026-11-02

History

History
RecordedChangedSources
affectedOSV
affected, aliases, referencesOSV
affected, aliases, referencesOSV
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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