CVE-2026-68831 Windows Defender Firewall Service Information Disclosure Vulnerability

{
  "id": "2f93c4a3373cc9b443e674e0a6241966898ba82284fee436b8ab800bf3184147",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68831",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-68831 Windows Defender Firewall Service Information Disclosure Vulnerability",
    "summary": "An authorized attacker can disclose information locally through files or directories accessible to external parties in Windows Defender Firewall Service.",
    "evidence": "Files or directories accessible to external parties in Windows Defender Firewall Service allows an authorized attacker to disclose information locally.",
    "products": [
      {
        "name": {
          "value": "Windows Defender Firewall Service",
          "evidence": "Files or directories accessible to external parties in Windows Defender Firewall Service"
        },
        "prerequisites": [
          {
            "value": "an authorized attacker",
            "evidence": "allows an authorized attacker to disclose information locally"
          }
        ],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-68831",
        "evidence": "CVE-2026-68831 Windows Defender Firewall Service Information Disclosure Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26787,
  "published_at": "2026-09-08T14:00:00+00:00"
}