{"id":"CVE-2026-27913","aliases":["EUVD-2026-22455","GHSA-9g78-wccg-v453"],"status":"published","title":"Windows BitLocker Security Feature Bypass Vulnerability","description":"Improper input validation in Windows BitLocker 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":"2026-11-10","score":0.00303,"percentile":0.2326,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2026-04-14T16:58:08Z","modified":"2026-10-26T22:10:00Z","products":[{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"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 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27913","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27913"},{"url":"https://github.com/advisories/GHSA-9g78-wccg-v453"}],"sources":{"cve":[{"id":"CVE-2026-27913","title":"Windows BitLocker Security Feature Bypass Vulnerability","description":"Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T16:58:08.294Z","modified":"2026-10-15T15:53:17.196Z","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-20"],"updated_at":"2026-11-02T14:19:48.826324Z"}],"euvd":[{"id":"EUVD-2026-22455","description":"Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T16:58:08Z","modified":"2026-10-15T15:53:17Z","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":"2026-11-02T17:00:12.978606Z"}],"ghsa":[{"id":"GHSA-9g78-wccg-v453","title":"Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a...","description":"Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T18:30:38Z","modified":"2026-04-14T18:30:50Z","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-20"],"updated_at":"2026-11-02T15:07:29.526942Z"}],"nvd":[{"id":"CVE-2026-27913","description":"Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T18:16:58.86Z","modified":"2026-10-26T22:10:00.163Z","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"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}