CVE-2026-83683 Windows Encrypting File System (EFS) Information Disclosure Vulnerability

{
  "id": "7e8f1b700b6c9a90c1290dbc5a4800a3497e9c4e012f74dbf8fde73b6270e2bb",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83683",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-83683 Windows Encrypting File System (EFS) Information Disclosure Vulnerability",
    "summary": "Absolute path traversal in Windows EFS can allow an authorized attacker to disclose information over a network.",
    "evidence": "Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information over a network.",
    "products": [
      {
        "name": {
          "value": "Windows Encrypting File System (EFS)",
          "evidence": "Windows Encrypting File System (EFS)"
        },
        "prerequisites": [
          {
            "value": "an authorized attacker",
            "evidence": "allows an authorized attacker to disclose information"
          }
        ],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-83683",
        "evidence": "CVE-2026-83683 Windows Encrypting File System (EFS) Information Disclosure Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25502,
  "published_at": "2026-10-13T14:00:00+00:00"
}