{"id":"CVE-2025-53139","aliases":["EUVD-2025-34349","GHSA-6mcj-8vj2-8vvq"],"status":"published","title":"Windows Hello Security Feature Bypass Vulnerability","description":"Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker to bypass a security feature locally.","severity":{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00289,"percentile":0.21693,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-319"],"published":"2025-10-14T17:00:57Z","modified":"2026-06-17T09:37:40Z","products":[{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h3"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53139","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53139"},{"url":"https://github.com/advisories/GHSA-6mcj-8vj2-8vvq"}],"sources":{"cve":[{"id":"CVE-2025-53139","title":"Windows Hello Security Feature Bypass Vulnerability","description":"Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2025-10-14T17:00:57.181Z","modified":"2026-02-26T17:47:12.007Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-319"],"updated_at":"2026-11-02T14:32:49.180768Z"}],"euvd":[{"id":"EUVD-2025-34349","description":"Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2025-10-14T17:00:57Z","modified":"2026-02-26T17:47:12Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T19:48:23.405029Z"}],"ghsa":[{"id":"GHSA-6mcj-8vj2-8vvq","title":"Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker...","description":"Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2025-10-14T18:30:29Z","modified":"2025-10-14T18:30:30Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-319"],"updated_at":"2026-11-02T15:03:57.454768Z"}],"nvd":[{"id":"CVE-2025-53139","description":"Cleartext transmission of sensitive information in Windows Hello allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2025-10-14T17:15:43.423Z","modified":"2026-06-17T09:37:40.987Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-319"],"updated_at":"2026-11-02T14:11:38.17237Z"}]}}