{"id":"CVE-2026-26175","aliases":["EUVD-2026-22412","GHSA-hxjp-pw3h-w6qr"],"status":"published","title":"Windows Boot Manager Security Feature Bypass Vulnerability","description":"Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a security feature with a physical attack.","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00395,"percentile":0.34055,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2026-04-14T16:57:05Z","modified":"2026-10-26T22:10:00Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"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 11 version 26h1"},{"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 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"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"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26175","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26175"},{"url":"https://github.com/advisories/GHSA-hxjp-pw3h-w6qr"}],"sources":{"cve":[{"id":"CVE-2026-26175","title":"Windows Boot Manager Security Feature Bypass Vulnerability","description":"Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-04-14T16:57:05.52Z","modified":"2026-10-15T15:52:23.687Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T13:38:32.13011Z"}],"euvd":[{"id":"EUVD-2026-22412","description":"Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-04-14T16:57:05Z","modified":"2026-10-15T15:52:23Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T17:00:13.422137Z"}],"ghsa":[{"id":"GHSA-hxjp-pw3h-w6qr","title":"Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a...","description":"Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-04-14T18:30:38Z","modified":"2026-04-14T18:30:49Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T15:07:29.526942Z"}],"nvd":[{"id":"CVE-2026-26175","description":"Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a security feature with a physical attack.","status":"published","published":"2026-04-14T18:16:52.7Z","modified":"2026-10-26T22:10:00.163Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}