{"id":"CVE-2026-77892","aliases":[],"cve":{"records":[{"id":"CVE-2026-77892","source":"microsoft","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-08-21T17:26:55.612Z","published":"2026-09-08T17:13:28.881Z","modified":"2026-10-30T21:51:53.052Z"}],"publishers":[{"name":"microsoft","role":"CNA","organizationId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","modified":"2026-10-30T21:51:53.052Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-09-09T18:56:45.664Z"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77892","tags":["vendor-advisory","patch"],"source":"microsoft"}],"weaknesses":[{"id":"CWE-693","description":"CWE-693: Protection Mechanism 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Coordinator","timestamp":"2026-09-09T18:56:35.133096Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"Windows Boot Manager Elevation of Privilege Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","description":"No cwe for this issue in Windows Boot Manager allows an unauthorized attacker to elevate privileges with a physical attack.","score":6.8,"severity":"medium","published":"2026-09-08T17:13:28.881Z","modified":"2026-10-30T21:51:53.052Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Microsoft","name":"Windows 10 Version 1607","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.14393.0","status":"affected","lessThan":"10.0.14393.9512","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"},{"vendor":"Microsoft","name":"Windows 10 Version 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Systems"],"versions":[{"version":"10.0.14393.0","status":"affected","lessThan":"10.0.14393.9512","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"},{"vendor":"Microsoft","name":"Windows Server 2016 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.14393.0","status":"affected","lessThan":"10.0.14393.9512","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"},{"vendor":"Microsoft","name":"Windows Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","status":"affected","lessThan":"10.0.17763.9245","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"},{"vendor":"Microsoft","name":"Windows Server 2019 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","status":"affected","lessThan":"10.0.17763.9245","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"},{"vendor":"Microsoft","name":"Windows Server 2022","platforms":["x64-based Systems"],"versions":[{"version":"10.0.20348.0","status":"affected","lessThan":"10.0.20348.5622","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"},{"vendor":"Microsoft","name":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33438","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"},{"vendor":"Microsoft","name":"Windows Server 2025 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33438","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"}],"remediation":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77892"],"sources":[{"name":"CVE","id":"CVE-2026-77892","modified":"2026-10-30T21:51:53.052Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","score":6.8}],"sourceAffected":[],"observedAt":"2026-10-30T23:36:28.672Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T16:15:33.392Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"A vulnerability in Windows Boot Manager allows an unauthorized attacker to elevate privileges with physical access. Affected versions include various Windows 10 and Windows 11 releases, as well as Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025. The weakness is described as a protection mechanism failure.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-31T03:26:07.816Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-77892"}]}}