{"id":"CVE-2026-81354","aliases":["EUVD-2026-73850","GHSA-7mj2-xr47-8q24"],"status":"published","title":"Windows Hello Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00348,"percentile":0.28844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-09-08T17:18:51Z","modified":"2026-11-10T21:37:53Z","products":[{"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 server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81354","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81354"},{"url":"https://github.com/advisories/GHSA-7mj2-xr47-8q24"}],"sources":{"cve":[{"id":"CVE-2026-81354","title":"Windows Hello Elevation of Privilege Vulnerability","description":"Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:18:51.261Z","modified":"2026-11-10T21:37:53.052Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-10T22:48:54.14451Z"}],"euvd":[{"id":"EUVD-2026-73850","description":"Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T17:18:51Z","modified":"2026-11-10T21:37:53Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:19.311812Z"}],"ghsa":[{"id":"GHSA-7mj2-xr47-8q24","title":"Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges...","description":"Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:33:29Z","modified":"2026-09-08T18:33:58Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:11:34.019342Z"}],"nvd":[{"id":"CVE-2026-81354","description":"Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-09-08T18:20:53.193Z","modified":"2026-09-10T15:03:01.247Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}