{"schemaVersion":3,"id":"CVE-2026-112279","aliases":[],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-10-19T13:55:24.937Z","modified":"2026-10-19T17:56:06.184Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.1,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.1,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.1,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-125","name":"Out-of-bounds Read","description":"The product reads data past the end, or before the beginning, of the intended buffer.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/125.html"}],"affected":[{"vendor":"rdesktop","product":"rdesktop","name":"rdesktop","label":"rdesktop","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 1.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.9.0","eol":null,"hubHref":"/vendor/rdesktop/rdesktop"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read","label":"hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read","hostname":"hackmd.io","tags":["Third Party Advisory"]},{"url":"https://github.com/rdesktop/rdesktop/issues/436","label":"github.com/rdesktop/rdesktop/issues/436","hostname":"github.com","tags":["Issue Tracking"]},{"url":"https://github.com/rdesktop/rdesktop/pull/437","label":"github.com/rdesktop/rdesktop/pull/437","hostname":"github.com","tags":["Patch","Issue Tracking"]},{"url":"https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.c","label":"github.com/rdesktop/rdesktop/blob/v1.9.0/orders.c","hostname":"github.com","tags":["Technical Description"]},{"url":"https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2","label":"www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2","hostname":"www.vulncheck.com","tags":["Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-19T13:55:24.937Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-19T17:56:06.184Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":28,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:32:04.335Z","stale":false,"partial":false}}