{"id":"CVE-2026-112807","aliases":["EUVD-2026-121881","GHSA-m8p7-83xc-mhq3"],"status":"published","title":"Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability","description":"Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to deny service over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.01137,"percentile":0.67087,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-11-10T18:18:20Z","modified":"2026-11-10T21:32:50Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows 11 version 26h2"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-112807","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112807"},{"url":"https://github.com/advisories/GHSA-m8p7-83xc-mhq3"}],"sources":{"cve":[{"id":"CVE-2026-112807","title":"Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability","description":"Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to deny service over a network.","status":"published","published":"2026-11-10T18:18:20.562Z","modified":"2026-11-13T18:07:12.876Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-10T19:39:58.44836Z"}],"euvd":[{"id":"EUVD-2026-121881","description":"Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to deny service over a network.","status":"published","published":"2026-11-10T18:18:20Z","modified":"2026-11-13T18:07:12Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:32.395185Z"}],"ghsa":[{"id":"GHSA-m8p7-83xc-mhq3","title":"Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an...","description":"Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to deny service over a network.","status":"published","published":"2026-11-10T21:32:43Z","modified":"2026-11-10T21:32:50Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-122"],"updated_at":"2026-11-10T21:57:50.285633Z"}],"nvd":[{"id":"CVE-2026-112807","description":"Heap-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to deny service over a network.","status":"published","published":"2026-11-10T19:18:44.483Z","modified":"2026-11-10T21:18:36.52Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-11T00:21:54.23974Z"}]}}