{"id":"CVE-2021-27086","aliases":["EUVD-2021-13857","GHSA-rqv4-4ww5-pmv5"],"status":"published","title":"Windows Services and Controller App Elevation of Privilege Vulnerability","description":"Windows Services and Controller App 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":"2026-11-12","score":0.00814,"percentile":0.57513,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-863"],"published":"2021-04-13T19:32:39Z","modified":"2026-06-17T03:44:15Z","products":[{"vendor":"microsoft","product":"windows 10 version 1803"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 1909"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows 10 version 20h2"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27086","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/162157/Microsoft-Windows-SCM-Remote-Access-Check-Limit-Bypass-Privilege-Escalation.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27086"},{"url":"https://github.com/advisories/GHSA-rqv4-4ww5-pmv5"}],"sources":{"cve":[{"id":"CVE-2021-27086","title":"Windows Services and Controller App Elevation of Privilege Vulnerability","description":"Windows Services and Controller App Elevation of Privilege Vulnerability","status":"published","published":"2021-04-13T19:32:39Z","modified":"2024-08-03T20:40:47.3Z","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":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-13857","description":"Windows Services and Controller App Elevation of Privilege Vulnerability","status":"published","published":"2021-04-13T19:32:39Z","modified":"2024-08-03T20:40:47Z","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":"2026-11-03T03:24:50.383074Z"}],"ghsa":[{"id":"GHSA-rqv4-4ww5-pmv5","title":"Windows Services and Controller App Elevation of Privilege Vulnerability","description":"Windows Services and Controller App Elevation of Privilege Vulnerability","status":"published","published":"2022-05-24T17:47:16Z","modified":"2024-01-07T05:05:11Z","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","CWE-863"],"updated_at":"2026-11-02T14:55:20.878476Z"}],"nvd":[{"id":"CVE-2021-27086","description":"Windows Services and Controller App Elevation of Privilege Vulnerability","status":"published","published":"2021-04-13T20:15:15.593Z","modified":"2026-06-17T03:44:15.787Z","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"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:06:51.610648Z"}]}}