EUVD-2026-73609
GHSA-6x59-3qf7-4cx8
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-accessible pre-auth AD DS handler, no special conditions, availability-only impact; vendor vector is accurate and independently confirmed.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.
AnalysisAI
Memory exhaustion in Windows Active Directory Domain Services enables unauthenticated remote attackers to crash or severely degrade the AD DS service by repeatedly triggering a memory leak (CWE-401), denying authentication and directory services to all domain-joined systems. Affected builds span Windows Server 2022, Windows Server 2025, and multiple Windows 11 release channels (23H2 through 26H1). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration is required beyond the default deployment of a Windows domain controller with the AD DS role installed and network-reachable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately captures the network-reachable, unauthenticated nature and availability-only impact. … 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 | Vendor-released patches are available for all affected builds. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify the Windows patch addressing memory exhaustion in AD DS via Microsoft security advisory and test it in a non-production domain controller environment to validate authentication services remain stable. …
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Same weakness CWE-401 – Memory Leak
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External POC / Exploit Code
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