CVE-2026-69781 Windows DHCP Client Denial of Service Vulnerability

{
  "id": "3d8d5e234bc98c04409616fd80959f4e087e392dd0e1af53216463ff07ed5631",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69781",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-69781 Windows DHCP Client Denial of Service Vulnerability",
    "summary": "An unauthorized attacker on an adjacent network can cause a denial of service in Windows DHCP Client due to memory not being released after its effective lifetime.",
    "evidence": "Missing release of memory after effective lifetime in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.",
    "products": [
      {
        "name": {
          "value": "Windows DHCP Client",
          "evidence": "Windows DHCP Client"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-69781",
        "evidence": "CVE-2026-69781 Windows DHCP Client Denial of Service Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26974,
  "published_at": "2026-09-08T14:00:00+00:00"
}