{"id":"CVE-2026-112279","title":"rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_bmpcache2","summary":"rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_bmpcache2() in orders.c that allows malicious RDP servers to crash clients via crafted revision-2 bitmap cache orders. Attackers can send an uncompressed …","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":"2026-10-19T13:55:24.937Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112279","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/orders.c"},{"url":"https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2","label":"VulnCheck Advisory: rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_bmpcache2"}],"tags":["cve.org"],"ingestedAt":"2026-10-19T14:30:01.071Z","slug":"CVE-2026-112279","body":"## Overview\n\nrdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_bmpcache2() in orders.c that allows malicious RDP servers to crash clients via crafted revision-2 bitmap cache orders. Attackers can send an uncompressed order with large width/height or an underflowing mode nibble and short payload, causing memcpy() 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":[]}