CVE-2026-33689
xrdp: Pre-authentication out-of-bounds reads in channel parsers
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
8.7
xrdp: Pre-authentication out-of-bounds reads in channel parsers
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
- Record
CVE-2026-33689- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-125
- Updated
- 2026-11-02
EUVDEUVD-2026-23516
8.7
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
- Record
EUVD-2026-23516- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
NVD
8.7
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
- Record
CVE-2026-33689- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
OSVALPINE-CVE-2026-33689
9.1
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
- Record
ALPINE-CVE-2026-33689- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-03
OSV
8.7
xrdp: Pre-authentication out-of-bounds reads in channel parsers
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
- Record
CVE-2026-33689- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-125
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-33689
9.1
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
- Record
DEBIAN-CVE-2026-33689- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-33689
8.7
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
- Record
UBUNTU-CVE-2026-33689- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2026:10816-1 No score
libpainter0-0.9.27-2.1 on GA media
These are all security issues fixed in the libpainter0-0.9.27-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:10816-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
xrdpAlpine:v3.23 |
before 0.10.6-r0 | 0.10.6-r0 |
xrdpAlpine:v3.24 |
before 0.10.6-r0 | 0.10.6-r0 |
xrdpDebian:12 |
before 0.9.21.1-1+deb12u3, plus listed versions 0.9.21.1-10.9.21.1-1+deb12u10.9.21.1-1+deb12u2 |
0.9.21.1-1+deb12u3 |
xrdpDebian:13 |
before 0.10.1-3.1+deb13u2, plus listed versions 0.10.1-3.10.10.1-3.1+deb13u1 |
0.10.1-3.1+deb13u2 |
xrdpDebian:14 |
before 0.10.6-1, plus listed versions 0.10.1-3.10.10.1-40.10.1-4.10.10.2-10.10.2-2 Show 7 moreShow less0.10.4.1-10.10.4.1-20.10.5-10.10.5-20.10.5-30.10.5-40.10.5-5 |
0.10.6-1 |
xrdpUbuntu:Pro:14.04:LTS |
All versions, plus listed versions 0.6.0-10.6.0-1ubuntu0.10.6.0-1ubuntu0.1+esm10.6.0-1ubuntu0.1+esm20.6.0-1ubuntu0.1+esm3 |
None known |
xrdpUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 0.6.1-20.6.1-2ubuntu0.10.6.1-2ubuntu0.30.6.1-2ubuntu0.3+esm10.6.1-2ubuntu0.3+esm20.6.1-2ubuntu0.3+esm3 |
None known |
xrdpUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 0.9.1-90.9.4-10.9.4-20.9.4-30.9.4-4 Show 7 moreShow less0.9.4-50.9.5-10.9.5-1build10.9.5-20.9.5-2ubuntu0.1~esm10.9.5-2ubuntu0.1~esm20.9.5-2ubuntu0.1~esm3 |
None known |
xrdpUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 0.9.9-10.9.12-10.9.12-1ubuntu0.10.9.12-1ubuntu0.1+esm10.9.12-1ubuntu0.1+esm2 |
None known |
xrdpUbuntu:22.04:LTS |
All versions, plus listed versions 0.9.15-1ubuntu10.9.17-10.9.17-20.9.17-2ubuntu10.9.17-2ubuntu2 Show 5 moreShow less0.9.17-2ubuntu2+esm10.9.17-2ubuntu30.9.17-2ubuntu3+esm10.9.17-2ubuntu3+esm20.9.17-2ubuntu3.1 |
None known |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
xrdpUbuntu:24.04:LTS |
All versions, plus listed versions 0.9.21.1-10.9.24-20.9.24-30.9.24-3build10.9.24-3build20.9.24-40.9.24-4ubuntu0.1~esm10.9.24-4ubuntu0.1 |
None known |
xrdpUbuntu:25.10 |
All versions, plus listed versions 0.10.1-30.10.1-3.10.10.1-3.1+deb13u1build0.25.10.1 |
None known |
xrdpUbuntu:26.10 |
All versions, plus listed versions 0.10.1-4.10.10.6.1-2ubuntu1 |
None known |
xrdpUbuntu:26.04:LTS |
All versions, plus listed versions 0.10.1-3.10.10.1-40.10.1-4.10.10.1-4.1ubuntu0.1 |
None known |
xrdpopenSUSE:Tumbleweed From an advisory covering 8 CVEs |
before 0.9.27-2.1 | 0.9.27-2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected, aliases, references | OSV | |
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-33689 is a high vulnerability (CVSS 8.7) in Neutrinolabs Xrdp, published April 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. Fixed in xrdp 0.10.6-r0.
References
github.com/neutrinolabs/xrdp/security/advisories/GHSA-92mr-6wpp-27jj
github.com/neutrinolabs/xrdp/releases/tag/v0.10.6
security.alpinelinux.org/vuln/CVE-2026-33689
github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33689.json
nvd.nist.gov/vuln/detail/CVE-2026-33689
security-tracker.debian.org/tracker/CVE-2026-33689
Show 10 moreShow less
ubuntu.com/security/CVE-2026-33689
cve.org/CVERecord?id=CVE-2026-33689
suse.com/security/cve/CVE-2024-39917
suse.com/security/cve/CVE-2026-32105
suse.com/security/cve/CVE-2026-32107
suse.com/security/cve/CVE-2026-32623
suse.com/security/cve/CVE-2026-32624
suse.com/security/cve/CVE-2026-33145
suse.com/security/cve/CVE-2026-33689
suse.com/security/cve/CVE-2026-35512