CVE-2026-72978 Active Directory Federation Services (AD FS) Denial of Service Vulnerability

{
  "id": "385788ea4d7f304b36d9d495fefbed7c43903aae5d3a1894fe81b29362e843b8",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72978",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-72978 Active Directory Federation Services (AD FS) Denial of Service Vulnerability",
    "summary": "An unauthorized attacker can cause a denial of service over a network due to resource allocation without limits or throttling in AD FS.",
    "evidence": "Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.",
    "products": [
      {
        "name": {
          "value": "Active Directory Federation Services (AD FS)",
          "evidence": "Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS)"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-72978",
        "evidence": "CVE-2026-72978 Active Directory Federation Services (AD FS) Denial of Service Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26657,
  "published_at": "2026-09-08T14:00:00+00:00"
}