EUVD-2026-73251
GHSA-pwm8-fh67-2qww
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-accessible DoS requiring specific exploitation conditions (AC:H); no authentication needed, no confidentiality or integrity impact, availability-only effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
AnalysisAI
Denial of service against Active Directory Federation Services (AD FS) on multiple Windows Server and Windows 10 builds is achievable by unauthenticated remote attackers via unthrottled resource allocation (CWE-770). High attack complexity (AC:H) limits trivial or automated exploitation, and SSVC assessment confirms no active exploitation and non-automatable attack patterns. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network-level access to an AD FS endpoint on an unpatched build within the affected version ranges across Windows Server 2012 through 2025 and Windows 10 1607/1809. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.9 medium score accurately reflects genuine constraints on exploitability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-supplied security updates available through the Microsoft Security Response Center at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72978. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same technique Denial Of Service
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External POC / Exploit Code
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