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CVE-2026-91950

FreeRDP before 3.31.0 Out-of-Bounds Read via UINT32 Wraparound

7.1 HighFix available

CVE-2026-91950 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 0.40%, the 34th percentile. Fixed in freerdp3 3.31.0+dfsg-1.

What does this mean?
Severity
7.1 HighCVSS 4.0, CVE List
Exploit chance
0.40%EPSS, 34th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
3.31.0+dfsg-1freerdp3 +50 more

Description

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

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
None
Integrity
None
Availability
High

Exploit likelihood

0.40%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
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
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
Show 41 moreShow less
Affected packages
PackageAffectedFixed
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: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
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: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 before 3.31.0 Out-of-Bounds Read via UINT32 Wraparound

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Record
CVE-2026-91950
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/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:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
EUVDEUVD-2026-788077.1

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Record
EUVD-2026-78807
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-858j-6g95-r29w7.1

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet...

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Record
GHSA-858j-6g95-r29w
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/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
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
NVD7.1

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Record
CVE-2026-91950
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/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
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSV7.1

FreeRDP before 3.31.0 Out-of-Bounds Read via UINT32 Wraparound

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Record
CVE-2026-91950
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-125
Updated
2026-11-02
OSVDEBIAN-CVE-2026-919506.5

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Record
DEBIAN-CVE-2026-91950
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 7 moreShow less
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-2026:985989.3

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-2026:995168.8

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-2026:985989.3

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-2026-919507.1

FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the rdpdr_dump_packet function due to 32-bit unsigned integer wraparound in buffer bounds validation. A malicious RDP server can send a crafted RDPDR packet with computerNameLen set to 0xFFFFFFF0 to bypass bounds checks and trigger memory reads past the packet buffer, causing client crashes or heap disclosure in logs.

Record
UBUNTU-CVE-2026-91950
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/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:N/I:N/A:H
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

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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