{"id":"CVE-2026-114167","aliases":["EUVD-2026-121545","GHSA-ffh6-gfm7-w38f"],"status":"published","title":"HEVC Video Extensions Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00433,"percentile":0.38093,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-11-10T18:15:14Z","modified":"2026-11-10T21:32:59Z","products":[{"vendor":"microsoft","product":"hevc video extensions"},{"vendor":"microsoft","product":"hevc video extensions for licensed applications"},{"vendor":"microsoft","product":"hevc video extensions from device manufacturer"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114167","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114167"},{"url":"https://github.com/advisories/GHSA-ffh6-gfm7-w38f"}],"sources":{"cve":[{"id":"CVE-2026-114167","title":"HEVC Video Extensions Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-11-10T18:15:14.893Z","modified":"2026-11-12T21:42:25.98Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-10T19:39:58.44836Z"}],"euvd":[{"id":"EUVD-2026-121545","description":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-11-10T18:15:14Z","modified":"2026-11-12T21:42:25Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:33.201322Z"}],"ghsa":[{"id":"GHSA-ffh6-gfm7-w38f","title":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to...","description":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-11-10T21:32:52Z","modified":"2026-11-10T21:32:59Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-10T21:57:51.137748Z"}],"nvd":[{"id":"CVE-2026-114167","description":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.","status":"published","published":"2026-11-10T19:19:10.397Z","modified":"2026-11-10T20:18:02.957Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-10T22:21:32.984056Z"}]}}