Microsoft Addresses Kerberos Vulnerability in Domain Controllers

Microsoft Addresses Kerberos Vulnerability in Domain Controllers

First seen 20 Jan 2026, 04:00 UTC •Neowin •21.8

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Microsoft has issued a security advisory for IT administrators managing Windows Domain Controllers due to a vulnerability in the Kerberos authentication protocol. This vulnerability allows attackers to exploit weak and legacy encryption methods, potentially compromising security. IT admins are advised to implement the necessary patches to mitigate this risk.

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