CVE-2025-21299HighCVSS 7.1

Windows Kerberos Security Feature Bypass Vulnerability

Published
January 14, 2025
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2025-21299 →

📋 Description

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.

🎯 Affected products27

  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2022, 23H2 Edition (Server Core installation)
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)

✅ Remediation

KB5050008 (Security Update) — fixed build 10.0.17763.6775 KB5049983 (Security Update) — fixed build 10.0.20348.3091 KB5049981 (Security Update) — fixed build 10.0.19044.5371 KB5050021 (Security Update) — fixed build 10.0.22621.4751 KB5049981 (Security Update) — fixed build 10.0.19045.5371 KB5050009 (Security Update) — fixed build 10.0.26100.2894 KB5050021 (Security Update) — fixed build 10.0.22631.4751 KB5049984 (Security Update) — fixed build 10.0.25398.1369 KB5050013 (Security Update) — fixed build 10.0.10240.20890 KB5049993 (Security Update) — fixed build 10.0.14393.7699

🔗 References (17)