CVE-2026-112277
MEDIUM
CVSS 6.5
Published: 2026-10-19
Modified: 2026-10-19
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Description
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.
Quick Facts
| CVE ID | CVE-2026-112277 |
| CVSS Score | 6.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Published | 2026-10-19 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/rdesktop/rdesktop/blob/v1.9.0/bitmap.c
- https://github.com/rdesktop/rdesktop/issues/436
- https://github.com/rdesktop/rdesktop/pull/437
- https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-r…
- https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-…
- https://github.com/rdesktop/rdesktop/issues/436
- https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-r…