Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2025-21218
CVE-2025-21218:
vulnerability analysis and mitigation
Overview
A Windows Kerberos Denial of Service vulnerability identified as CVE-2025-21218 was disclosed on January 14, 2025. This vulnerability affects multiple versions of Microsoft Windows Server, including Server 2012, 2012 R2, 2016, 2019, 2022, and 2025 (Rapid7).
Technical details
The vulnerability has been assigned a CVSS score of 8.0 with the vector (AV:N/AC:L/Au:N/C:N/I:N/A:C), indicating a high severity issue that can be exploited over the network with low attack complexity and no authentication required (Rapid7).
Impact
This vulnerability specifically affects the Windows Kerberos authentication system and can result in a denial of service condition, potentially impacting system availability (Rapid7).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability. The following patches are available: KB5050004 for Windows Server 2012, KB5050048 for Windows Server 2012 R2, KB5049993 for Windows Server 2016, KB5050008 for Windows Server 2019, KB5049983 for Windows Server 2022 (21H2 and 22H2), KB5049984 for Windows Server 2022 23H2, and KB5050009 for Windows Server 2025 24H2 (Rapid7).
Additional resources
Source: This report was generated using AI
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