CVE-2026-70075 Windows Virtualization-Based Security (VBS) Enclave Security Feature Bypass Vulnerability

{
  "id": "f26f1eb91d6a711b44ccdeffa107a11967285858efbab10926dde74f330c584d",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70075",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-70075 Windows Virtualization-Based Security (VBS) Enclave Security Feature Bypass Vulnerability",
    "summary": "A TOCTOU race condition in Windows VBS Enclave could let an authorized local attacker bypass a security feature.",
    "evidence": "Time-of-check time-of-use (toctou) race condition in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.",
    "products": [
      {
        "name": {
          "value": "Windows Virtualization-Based Security (VBS) Enclave",
          "evidence": "Windows Virtualization-Based Security (VBS) Enclave"
        },
        "prerequisites": [
          {
            "value": "authorized attacker",
            "evidence": "allows an authorized attacker"
          }
        ],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-70075",
        "evidence": "CVE-2026-70075 Windows Virtualization-Based Security (VBS) Enclave Security Feature Bypass Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25419,
  "published_at": "2026-10-13T14:00:00+00:00"
}