CVE-2026-77892 Windows Boot Manager Elevation of Privilege Vulnerability

{
  "id": "f4a5fe5c9b83b26fc7014b3d275cb03030872e816d2ba6e74b823194d3f988b3",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77892",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-77892 Windows Boot Manager Elevation of Privilege Vulnerability",
    "summary": "An unauthorized attacker may elevate privileges in Windows Boot Manager through a physical attack.",
    "evidence": "Windows Boot Manager allows an unauthorized attacker to elevate privileges with a physical attack.",
    "products": [
      {
        "name": {
          "value": "Windows Boot Manager",
          "evidence": "Windows Boot Manager allows an unauthorized attacker"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-77892",
        "evidence": "CVE-2026-77892 Windows Boot Manager Elevation of Privilege Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26684,
  "published_at": "2026-09-08T14:00:00+00:00"
}