{"id":"CVE-2021-33781","aliases":["EUVD-2021-20458","GHSA-h3q4-8mmf-5g36"],"status":"published","title":"Azure AD Security Feature Bypass Vulnerability","description":"Azure AD Security Feature Bypass Vulnerability","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0241,"percentile":0.84236,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-07-14T17:53:53Z","modified":"2026-08-10T18:31:43Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"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 10 version 21h1"},{"vendor":"microsoft","product":"windows 11 version 21h2"},{"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 version 2004"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33781","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33781","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33781"},{"url":"https://github.com/advisories/GHSA-h3q4-8mmf-5g36"}],"sources":{"cve":[{"id":"CVE-2021-33781","title":"Azure AD Security Feature Bypass Vulnerability","description":"Azure AD Security Feature Bypass Vulnerability","status":"published","published":"2021-07-14T17:53:53Z","modified":"2026-08-10T15:11:41.889Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-20458","description":"Azure AD Security Feature Bypass Vulnerability","status":"published","published":"2021-07-14T17:53:53Z","modified":"2026-08-10T15:11:41Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:02:04.178454Z"}],"ghsa":[{"id":"GHSA-h3q4-8mmf-5g36","title":"Active Directory Security Feature Bypass Vulnerability","description":"Active Directory Security Feature Bypass Vulnerability","status":"published","published":"2022-05-24T19:07:53Z","modified":"2026-08-10T18:31:43Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:10:15.270288Z"}],"nvd":[{"id":"CVE-2021-33781","description":"Azure AD Security Feature Bypass Vulnerability","status":"published","published":"2021-07-14T18:15:10.823Z","modified":"2026-08-10T16:17:42.24Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:55.747384Z"}]}}