{"id":"CVE-2026-112277","aliases":["DEBIAN-CVE-2026-112277","EUVD-2026-104296","GHSA-8gqw-q36r-ch2f","UBUNTU-CVE-2026-112277"],"status":"published","title":"rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_plane","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.","severity":{"version":"4.0","score":7.1,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0039,"percentile":0.33544,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-19T13:55:23Z","modified":"2026-10-28T20:17:32Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.0-2","1.9.0-3"]},{"source":"osv","ecosystem":"Debian:13","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.0-2","1.9.0-3"]},{"source":"osv","ecosystem":"Debian:14","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.0-2","1.9.0-3"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.3-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.3-2","1.8.3-2build1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.6-2build1","1.9.0-1","1.9.0-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.0-2build1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.0-2build1","1.9.0-2build3","1.9.0-2build4"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.0-3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"rdesktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.0-2build4","1.9.0-2build5","1.9.0-3"]}],"products":[{"vendor":"rdesktop","product":"rdesktop"}],"references":[{"url":"https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read","tags":["third-party-advisory","exploit","advisory"]},{"url":"https://github.com/rdesktop/rdesktop/issues/436","tags":["issue-tracking","exploit","report"]},{"url":"https://github.com/rdesktop/rdesktop/pull/437","tags":["patch","issue-tracking","fix","report"]},{"url":"https://github.com/rdesktop/rdesktop/blob/v1.9.0/bitmap.c","tags":["technical-description","article"]},{"url":"https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-plane","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112277","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8gqw-q36r-ch2f"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112277.json","tags":["advisory"]},{"url":"https://github.com/rdesktop/rdesktop","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-112277","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-112277","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-112277","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-112277","title":"rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_plane","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.","status":"published","published":"2026-10-19T13:55:23.436Z","modified":"2026-10-19T19:28:48.29Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T13:44:51.734189Z"}],"euvd":[{"id":"EUVD-2026-104296","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.","status":"published","published":"2026-10-19T13:55:23Z","modified":"2026-10-19T19:28:48Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"}],"updated_at":"2026-11-02T16:59:48.157412Z"}],"ghsa":[{"id":"GHSA-8gqw-q36r-ch2f","title":"rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_plane() in...","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.","status":"published","published":"2026-10-19T15:32:40Z","modified":"2026-10-19T15:32:45Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:13:57.629988Z"}],"nvd":[{"id":"CVE-2026-112277","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.","status":"published","published":"2026-10-19T14:17:05.663Z","modified":"2026-10-19T21:14:14.15Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:13:00.83844Z"}],"osv":[{"id":"CVE-2026-112277","title":"rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_plane","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.","status":"published","published":"2026-10-19T13:55:23.436Z","modified":"2026-10-28T02:31:14.412839947Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:55.938017Z"},{"id":"DEBIAN-CVE-2026-112277","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.","status":"published","published":"2026-10-19T14:17:05.663Z","modified":"2026-10-23T18:05:00.065769212Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"}],"updated_at":"2026-11-02T15:45:49.824149Z"},{"id":"UBUNTU-CVE-2026-112277","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. 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