CVE-2026-69624: Microsoft Active Directory Certificate Services input validation bypass

CVE-2026-69624 · Severity: medium · CVSS 6.5 · Published 2026-09-08

Active Directory Certificate Services (AD CS) is Microsoft's infrastructure for issuing digital certificates used to authenticate users, computers, and services in enterprise networks. An incomplete validation of user inputs allows an authorized attacker to manipulate certificate issuance processes over the network, potentially issuing unauthorized certificates or compromising the integrity of the certificate infrastructure.

Technologies: Microsoft Active Directory Certificate Services. Vendors: Microsoft.

Quick answers

Is CVE-2026-69624 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-69624 being exploited in the wild.
How severe is CVE-2026-69624?
Medium severity, with a CVSS score of 6.5, published 8 September 2026.
Which products and versions are affected?
Microsoft Active Directory Certificate Services.
Is there a fix for CVE-2026-69624?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-69624 attacked?
It is attacked over the network.
Am I affected by CVE-2026-69624?
Check whether you run Microsoft Active Directory Certificate Services. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability exists in Active Directory Certificate Services due to an incomplete list of disallowed inputs, resulting in insufficient input validation. The flaw allows an authorized attacker to bypass input sanitization checks and perform tampering operations over the network. The attack requires authentication to the AD CS service. Successful exploitation could lead to unauthorized certificate issuance or modification of certificate properties. A patch is expected to be available through Microsoft's regular security update process.

Affected products

  • Microsoft Active Directory Certificate Services

Timeline

  • 2026-09-08: disclosed

References

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