EUVD-2026-73692
GHSA-wg9w-mvch-xjv9
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Network-reachable AD CS endpoint with low-privilege auth required; no integrity or availability impact established from format string read.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use of externally-controlled format string in Active Directory Certificate Services (AD CS) allows an authorized attacker to disclose information over a network.
AnalysisAI
Format string exploitation in Microsoft Active Directory Certificate Services (AD CS) allows a low-privileged authenticated attacker to disclose sensitive information over the network. The flaw (CWE-134) arises from externally-controlled format string input reaching a format function without sanitization, potentially exposing memory contents including PKI-sensitive data. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privilege domain account (PR:L) and network-level access to a Windows Server system with the Active Directory Certificate Services role installed and the CA enrollment service reachable over the network (AV:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) reflects a network-exploitable flaw requiring only low-privilege credentials with no user interaction, delivering high confidentiality 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 | Apply the Microsoft security updates that deliver the fixed builds for each affected platform: Windows Server 2025/Server Core to build 10.0.26100.33438 or later; Windows Server 2022 to 10.0.20348.5622 or later; Windows Server 2019/Windows 10 1809 to 10.0.17763.9245 or later; Windows Server 2016/Windows 10 1607 to 10.0.14393.9512 or later; Windows Server 2012 R2 to 6.3.9600.23397 or later; and Windows Server 2012 to 6.2.9200.26349 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-134 – Use of Externally-Controlled Format String
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External POC / Exploit Code
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