Weak Authentication in Microsoft Windows and Windows Server - CVE-2026-69982

Vulnerability details

The vulnerability allows a remote attacker to bypass a security feature.

The vulnerability exists due to weak authentication in Active Directory Federation Services (AD FS) when handling authentication over a network. A remote attacker can exploit the authentication weakness to bypass a security feature.

Successful exploitation is complex and time-consuming, requiring significant effort and precise conditions.

Affected software

How to mitigate CVE-2026-69982

External References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-69982
• https://support.microsoft.com/help/5126836

Related Security Bulletins

• Multiple vulnerabilities in Microsoft Windows