EUVD-2026-73070
GHSA-g8f7-gpw2-vw93
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable KDC requires only a valid domain account (PR:L); no configuration prerequisite beyond standard AD; code execution yields full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Key Distribution Center allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution in the Windows Key Distribution Center (KDC) - the Kerberos authentication service running on every Active Directory domain controller - allows a low-privileged authenticated network attacker to execute arbitrary code via a use-after-free memory corruption flaw (CWE-416). Every currently-supported Windows Server release from Server 2012 through Server 2025 is affected, spanning the full breadth of enterprise Active Directory infrastructure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold a valid low-privileged Active Directory domain account (PR:L per CVSS) and have network connectivity to TCP/UDP port 88 on a Windows Server domain controller running the KDC service. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a high-severity network-exploitable flaw requiring only low privileges. … 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 Microsoft Security Update for each affected platform to meet or exceed the minimum patched build: Server 2012 ≥6.2.9200.26349, Server 2012 R2 ≥6.3.9600.23397, Server 2016 ≥10.0.14393.9512, Server 2019 ≥10.0.17763.9245, Server 2022 ≥10.0.20348.5622, Server 2025 ≥10.0.26100.33438. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server versions running Active Directory in your infrastructure and confirm patch availability through your Microsoft support channel; identify a representative test domain controller for patch validation. …
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Same weakness CWE-416 – Use After Free
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External POC / Exploit Code
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