CVE-2025-21218HighCVSS 7.5

Windows Kerberos Denial of Service Vulnerability

Published
January 14, 2025
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2025-21218 →

📋 Description

How could an attacker exploit this vulnerability? An unauthenticated attacker could use a specially crafted application to leverage a protocol vulnerability in the Kerberos Key Distribution Center (KDC) Proxy Service to perform denial of service against the target.

🎯 Affected products13

  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)
  • 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 KB5050009 (Security Update) — fixed build 10.0.26100.2894 KB5049984 (Security Update) — fixed build 10.0.25398.1369 KB5049993 (Security Update) — fixed build 10.0.14393.7699 KB5050004 (Monthly Rollup) — fixed build 6.2.9200.25273 KB5050048 (Monthly Rollup) — fixed build 6.3.9600.22371

🔗 References (15)