EUVD-2026-73054
GHSA-7p7r-x3g6-562v
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable Kerberos port, no authentication required, trivial complexity; sole impact is service availability with no confidentiality or integrity effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Null pointer dereference in Windows Kerberos allows an unauthorized attacker to deny service over a network.
AnalysisAI
Remote unauthenticated denial of service in Windows Kerberos allows a network attacker to crash the Kerberos authentication service on affected Windows Server 2025 and Windows 11 (24H2/25H2) systems. A CWE-476 null pointer dereference is triggered by a specially crafted Kerberos packet, causing the service to terminate and disrupting all Kerberos-based authentication on the affected host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions beyond network access to TCP/UDP port 88 (Kerberos) on an affected host. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 score (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately reflects the threat: any unauthenticated network attacker can trigger a service crash with no complexity barrier, but impact is strictly limited to availability with no confidentiality or integrity component. … 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-released patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69744. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows Server 2025 and Windows 11 (24H2/25H2) systems providing Kerberos or domain authentication services in your environment. …
Sign in for detailed remediation steps and compensating controls.
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Denial Of Service
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External POC / Exploit Code
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