CVE-2026-83664 Windows Portable Device File System Driver Information Disclosure Vulnerability

{
  "id": "2937bb11a5cf8f1740b7718d5a705c5a44192fa932ba93c576cd9a757d7f6c5b",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83664",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-83664 Windows Portable Device File System Driver Information Disclosure Vulnerability",
    "summary": "An authorized attacker could disclose information locally through a type confusion in the Windows Portable Device File System Driver.",
    "evidence": "Access of resource using incompatible type ('type confusion') in Windows Portable Device File System Driver allows an authorized attacker to disclose information locally.",
    "products": [
      {
        "name": {
          "value": "Windows Portable Device File System Driver",
          "evidence": "Access of resource using incompatible type ('type confusion') in Windows Portable Device File System Driver allows an authorized attacker to disclose information locally."
        },
        "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-2026-83664",
        "evidence": "CVE-2026-83664 Windows Portable Device File System Driver Information Disclosure Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25493,
  "published_at": "2026-10-13T14:00:00+00:00"
}