{"id":"CVE-2026-85884","aliases":["EUVD-2026-100067","GHSA-wrgr-h77p-wv9h"],"status":"published","title":"Windows Health and Optimized Experiences Service Elevation of Privilege Vulnerability","description":"Missing authentication for critical function in Windows Health and Optimized Experiences 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":"2026-11-11","score":0.00437,"percentile":0.38421,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-306"],"published":"2026-10-13T19:01:04Z","modified":"2026-11-10T20:43:15Z","exploits":[{"source":"pocgithub","id":"Beardhammer/CVE-2026-85884","title":"Beardhammer/CVE-2026-85884","date":"2026-10-13","url":"https://github.com/Beardhammer/CVE-2026-85884"}],"products":[{"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_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_11_26h2"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85884","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85884"},{"url":"https://github.com/advisories/GHSA-wrgr-h77p-wv9h"}],"sources":{"cve":[{"id":"CVE-2026-85884","title":"Windows Health and Optimized Experiences Service Elevation of Privilege Vulnerability","description":"Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:04.035Z","modified":"2026-11-10T20:43:15.515Z","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-306"],"updated_at":"2026-11-10T22:18:29.471829Z"}],"euvd":[{"id":"EUVD-2026-100067","description":"Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:01:04Z","modified":"2026-11-10T20:43:15Z","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":"2026-11-10T22:23:57.125737Z"}],"ghsa":[{"id":"GHSA-wrgr-h77p-wv9h","title":"Missing authentication for critical function in Windows Health and Optimized Experiences Service...","description":"Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T21:36:12Z","modified":"2026-10-13T21:36:13Z","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-306"],"updated_at":"2026-11-02T15:13:18.544547Z"}],"nvd":[{"id":"CVE-2026-85884","description":"Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-10-13T19:21:15.313Z","modified":"2026-10-29T15:03:18.91Z","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-306"],"updated_at":"2026-11-02T14:12:58.13117Z"}]}}