CVE-2026-85856 Internet Connection Sharing (ICS) Remote Code Execution Vulnerability

{
  "id": "6af28d5346d3b146eaf79a026a401a43d5db11f21afba1c55bfe0b63345a5752",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85856",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-85856 Internet Connection Sharing (ICS) Remote Code Execution Vulnerability",
    "summary": "A heap-based buffer overflow in Windows Internet Connection Sharing (ICS) may allow an authorized attacker to execute code over an adjacent network.",
    "evidence": "Heap-based buffer overflow in Windows Internet Connection Sharing (ICS) allows an authorized attacker to execute code over an adjacent network.",
    "products": [
      {
        "name": {
          "value": "Windows Internet Connection Sharing (ICS)",
          "evidence": "Heap-based buffer overflow in Windows Internet Connection Sharing (ICS)"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-85856",
        "evidence": "CVE-2026-85856 Internet Connection Sharing (ICS) Remote Code Execution Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25176,
  "published_at": "2026-10-13T14:00:00+00:00"
}