CVE catalog
CVE-2026-55645
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform s
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.48% · Oct 25, 2026
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | xrdp | sid | 0.10.6.1-3 | fixed |
| Debian | xrdp | forky | 0.10.6.1-3 | fixed |
| Debian | xrdp | trixie | 0.10.1-3.1+deb13u2 | fixed |
| Debian | xrdp | trixie-security | 0.10.1-3.1+deb13u2 | fixed |
| Debian | xrdp | bookworm | 0.9.21.1-1+deb12u2 | vulnerable |
| Debian | xrdp | bookworm-security | 0.9.21.1-1+deb12u3 | fixed |
| Cpe | xrdp | Not reported | Not reported | vulnerable |
| Cpe | xrdp | Not reported | 0.10.6.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | xrdp | source | sid | 0.10.6.1-2 | not yet assigned | Not reported | Not reported |
| Debian | xrdp | source | forky | 0.10.6.1-2 | not yet assigned | Not reported | Not reported |
| Debian | xrdp | source | trixie | 0.10.1-3.1+deb13u2 | not yet assigned | Not reported | Not reported |
| Debian | xrdp | source | bookworm | 0.9.21.1-1+deb12u3 | not yet assigned | Not reported | Not reported |
| Cpe | xrdp | cpe | Not reported | 0.10.6.1 | Not reported | NVD-CVE-2026-55645 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [xrdp]Affected
Details (6)
0.9.21.1-1+deb12u2· amd64 · bookwormAffected · Fixed:
0.9.21.1-1+deb12u3nvd · xrdp · debian · bookworm; nvd · xrdp · debian · 12
0.9.21.1-1+deb12u2· arm64 · bookwormAffected · Fixed:
0.9.21.1-1+deb12u3nvd · xrdp · debian · bookworm; nvd · xrdp · debian · 12
0.9.24-5~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
0.9.21.1-1+deb12u3nvd · xrdp · debian · bookworm; nvd · xrdp · debian · 12
0.9.24-5~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
0.9.21.1-1+deb12u3nvd · xrdp · debian · bookworm; nvd · xrdp · debian · 12
0.9.21.1-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
0.9.21.1-1+deb12u3nvd · xrdp · debian · bookworm; nvd · xrdp · debian · 12
0.9.21.1-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
0.9.21.1-1+deb12u3nvd · xrdp · debian · bookworm; nvd · xrdp · debian · 12
[Debian 13 (Trixie)]
- [xrdp]Affected
Details (5)
0.10.1-3.1+deb13u1· amd64 · trixieAffected · Fixed:
0.10.1-3.1+deb13u2nvd · xrdp · debian · 13
0.10.1-3.1+deb13u1· arm64 · trixieAffected · Fixed:
0.10.1-3.1+deb13u2nvd · xrdp · debian · 13
0.10.1-3.1+deb13u1· amd64 · trixie-security · Historical versionAffected · Fixed:
0.10.1-3.1+deb13u2nvd · xrdp · debian · 13
0.10.1-3.1+deb13u2· amd64 · trixie-securityFixed · Fixed:
0.10.1-3.1+deb13u2nvd · xrdp · debian · 13
0.10.1-3.1+deb13u2· arm64 · trixie-securityFixed · Fixed:
0.10.1-3.1+deb13u2nvd · xrdp · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11543-1.json]
- [https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1]
- [https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-3m4m-h22g-c7xx]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-55645]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-55645]
- [https://security-tracker.debian.org/tracker/CVE-2026-55645]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55645.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]