CVE catalog
CVE-2026-112277
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_plane() in bitmap.c that allows malicious RDP servers to crash clients by sending malformed 32 bpp compressed bitmaps
- Severity
- High · CVSS 7.1
CVSS: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 - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 25, 2026
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_plane() in bitmap.c that allows malicious RDP servers to crash clients by sending malformed 32 bpp compressed bitmaps. Attackers can declare a large bitmap geometry with a short compressed body in bitmap update PDUs or bitmap cache orders, causing unbounded reads past the receive buffer and denial of service.
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 | rdesktop | sid | 1.9.1-1 | vulnerable |
| Debian | rdesktop | forky | 1.9.0-3 | vulnerable |
| Debian | rdesktop | trixie | 1.9.0-2 | vulnerable |
| Debian | rdesktop | bookworm | 1.9.0-2 | vulnerable |
| Ubuntu | rdesktop | 16.04 | 1.8.3-1 | vulnerable |
| Ubuntu | rdesktop | 18.04 | 1.8.3-2 | vulnerable |
| Ubuntu | rdesktop | 18.04 | 1.8.3-2build1 | vulnerable |
| Ubuntu | rdesktop | 20.04 | 1.8.6-2build1 | vulnerable |
| Ubuntu | rdesktop | 20.04 | 1.9.0-1 | vulnerable |
| Ubuntu | rdesktop | 20.04 | 1.9.0-2 | vulnerable |
| Ubuntu | rdesktop | 22.04 | 1.9.0-2build1 | vulnerable |
| Ubuntu | rdesktop | 24.04 | 1.9.0-2build1 | vulnerable |
| Ubuntu | rdesktop | 24.04 | 1.9.0-2build3 | vulnerable |
| Ubuntu | rdesktop | 24.04 | 1.9.0-2build4 | vulnerable |
| Ubuntu | rdesktop | 26.10 | 1.9.0-3 | vulnerable |
| Ubuntu | rdesktop | 26.04 | 1.9.0-2build4 | vulnerable |
| Ubuntu | rdesktop | 26.04 | 1.9.0-2build5 | vulnerable |
| Ubuntu | rdesktop | 26.04 | 1.9.0-3 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rdesktop | source | sid | (unfixed) | unimportant | Not reported | Not reported |
| Debian | rdesktop | source | forky | (unfixed) | unimportant | Not reported | Not reported |
| Debian | rdesktop | source | trixie | (unfixed) | unimportant | Not reported | Not reported |
| Debian | rdesktop | source | bookworm | (unfixed) | unimportant | Not reported | Not reported |
OpenFactory catalog packages
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-112277]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-112277]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-112277]
- [https://security-tracker.debian.org/tracker/CVE-2026-112277]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-112277.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]