Windows Kerberos Security Feature Bypass Vulnerability

Are the updates for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems currently available?
Yes. As of April 9, 2025, the security update (5055547) for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems are available. Customers running Windows 10 should ensure the update is installed to be protected from this vulnerability.

Are there any additional steps that I need to follow to be protected from this vulnerability?
The changes to address this vulnerability updated Virtual Secure Mode components. The policy described in Guidance for blocking rollback of Virtualization-based Security (VBS) related security updates has been updated to account for the latest changes. If you deployed this policy, then you'll need to redeploy using the updated policy.

What kind of security feature could be bypassed by successfully exploiting this vulnerability?
An attacker who successfully exploited this vulnerability could bypass Windows Defender Credential Guard Feature to leak Kerberos credentials.

Security updates
10.0.17763.7136 — https://support.microsoft.com/help/5055519
10.0.20348.3453 — https://support.microsoft.com/help/5055526
10.0.19044.5737 — https://support.microsoft.com/help/5055518
10.0.22621.5189 — https://support.microsoft.com/help/5055528
10.0.26100.3775 — https://support.microsoft.com/help/5055523
10.0.25398.1551 — https://support.microsoft.com/help/5055527
10.0.10240.20978 — https://support.microsoft.com/help/5055547
10.0.14393.7969 — https://support.microsoft.com/help/5055521