{"id":"CVE-2021-26431","aliases":["EUVD-2021-13236","GHSA-9vmm-wmjj-7h4g"],"status":"published","title":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","description":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","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":"2026-11-10","score":0.01175,"percentile":0.67803,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-08-12T18:11:42Z","modified":"2026-08-10T18:31:59Z","products":[{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows 10 version 20h2"},{"vendor":"microsoft","product":"windows 10 version 21h1"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26431","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26431","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1053/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26431"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1053"},{"url":"https://github.com/advisories/GHSA-9vmm-wmjj-7h4g"}],"sources":{"cve":[{"id":"CVE-2021-26431","title":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","description":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","status":"published","published":"2021-08-12T18:11:42Z","modified":"2026-08-10T15:10:15.328Z","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"}],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-13236","description":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","status":"published","published":"2021-08-12T18:11:42Z","modified":"2026-08-10T15:10:15Z","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":"2026-11-02T18:02:05.388264Z"}],"ghsa":[{"id":"GHSA-9vmm-wmjj-7h4g","title":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","description":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","status":"published","published":"2022-05-24T19:10:53Z","modified":"2026-08-10T18:31:59Z","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-269"],"updated_at":"2026-11-02T15:10:15.270288Z"}],"nvd":[{"id":"CVE-2021-26431","description":"Windows Recovery Environment Agent Elevation of Privilege Vulnerability","status":"published","published":"2021-08-12T18:15:08.817Z","modified":"2026-08-10T16:17:33.667Z","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"},{"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"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:56.943671Z"}]}}