{"id":"CVE-2026-112279","published":"2026-10-19T14:17:05.977","lastModified":"2026-10-19T21:14:14.150","description":"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 order with large width/height or an underflowing mode nibble and short payload, causing memcpy() reads past the receive buffer and denial of service.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.c","tags":[]},{"url":"https://github.com/rdesktop/rdesktop/issues/436","tags":[]},{"url":"https://github.com/rdesktop/rdesktop/pull/437","tags":[]},{"url":"https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read","tags":[]},{"url":"https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2","tags":[]},{"url":"https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read","tags":[]}],"exploitRefs":[{"url":"https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.c","tags":[]},{"url":"https://github.com/rdesktop/rdesktop/issues/436","tags":[]},{"url":"https://github.com/rdesktop/rdesktop/pull/437","tags":[]}],"hasPoc":true,"ai":null}