{"id":"CVE-2026-112277","title":"rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_plane","summary":"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 bitma…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-125"],"vendor":"rdesktop","product":"rdesktop","affected":["rdesktop <= 1.9.0"],"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T13:55:23.436Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112277","references":[{"url":"https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read"},{"url":"https://github.com/rdesktop/rdesktop/issues/436"},{"url":"https://github.com/rdesktop/rdesktop/pull/437"},{"url":"https://github.com/rdesktop/rdesktop/blob/v1.9.0/bitmap.c"},{"url":"https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-plane","label":"VulnCheck Advisory: rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_plane"}],"tags":["cve.org"],"ingestedAt":"2026-10-19T14:30:01.072Z","slug":"CVE-2026-112277","body":"## Overview\n\nrdesktop 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.\n\n## Affected\n\n- `rdesktop <= 1.9.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}