CVE-2026-88159 Windows Background Intelligent Transfer Service (BITS) Remote Code Execution Vulnerability

{
  "id": "7fa6791a0f241f74f64e972bb1c2cd2458c4a2118560029c3b8149d6a251722d",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88159",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-88159 Windows Background Intelligent Transfer Service (BITS) Remote Code Execution Vulnerability",
    "summary": "An unauthorized attacker can execute code over a network by exploiting a use-after-free in Windows BITS.",
    "evidence": "Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.",
    "products": [
      {
        "name": {
          "value": "Windows Background Intelligent Transfer Service (BITS)",
          "evidence": "Windows Background Intelligent Transfer Service (BITS)"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-88159",
        "evidence": "CVE-2026-88159 Windows Background Intelligent Transfer Service (BITS) Remote Code Execution Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25205,
  "published_at": "2026-10-13T14:00:00+00:00"
}