{"id":"CVE-2026-81969","aliases":["EUVD-2026-99292","GHSA-8gvj-p5vq-qp98"],"status":"published","title":"Windows Server Update Service Elevation of Privilege Vulnerability","description":"Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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":0.00339,"percentile":0.27667,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1220"],"published":"2026-10-13T18:59:45Z","modified":"2026-11-10T20:35:51Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"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)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81969","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81969"},{"url":"https://github.com/advisories/GHSA-8gvj-p5vq-qp98"}],"sources":{"cve":[{"id":"CVE-2026-81969","title":"Windows Server Update Service Elevation of Privilege Vulnerability","description":"Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T18:59:45.75Z","modified":"2026-11-10T20:35:51.953Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-1220"],"updated_at":"2026-11-10T22:18:28.707469Z"}],"euvd":[{"id":"EUVD-2026-99292","description":"Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T18:59:45Z","modified":"2026-11-10T20:35:51Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T21:23:23.099302Z"}],"ghsa":[{"id":"GHSA-8gvj-p5vq-qp98","title":"Insufficient granularity of access control in Windows Server Update Service allows an authorized...","description":"Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T21:34:24Z","modified":"2026-10-13T21:34:25Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-1220"],"updated_at":"2026-11-02T15:13:15.646152Z"}],"nvd":[{"id":"CVE-2026-81969","description":"Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:19:54.677Z","modified":"2026-10-28T17:50:04.44Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-1220"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}