CVE-2026-69982: Microsoft Active Directory Federation Services authentication bypass

CVE-2026-69982 · Severity: medium · CVSS 5.9 · Published 2026-10-13

Active Directory Federation Services (AD FS) is Microsoft's identity and access management service used by organizations to manage user authentication across corporate networks and cloud applications. A weakness in its authentication mechanism allows an attacker to bypass security protections over the network without requiring valid credentials, potentially gaining unauthorized access to sensitive systems and data.

Technologies: Microsoft Active Directory Federation Services, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025. Vendors: Microsoft.

Quick answers

Is CVE-2026-69982 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-69982 being exploited in the wild.
How severe is CVE-2026-69982?
Medium severity, with a CVSS score of 5.9, published 13 October 2026.
Which products and versions are affected?
Microsoft Active Directory Federation Services.
Is there a fix for CVE-2026-69982?
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-2026-69982 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-69982?
Check whether you run Microsoft Active Directory Federation Services, Microsoft Windows 10 1607, Microsoft Windows 10 1809 or one of the others listed. 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

The vulnerability is an authentication bypass in AD FS that allows an attacker to circumvent security controls via network access without authorization. The flaw enables an unauthenticated remote attacker to bypass the authentication mechanism, gaining unauthorized access to protected resources. A patch is available from Microsoft to address this issue.

Affected products

  • Microsoft Active Directory Federation Services

Timeline

  • 2026-10-13: disclosed

References

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