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CVE-2025-21311 | Microsoft Windows 11 24H2/Server 2022 23H2/Server 2025 NTLM V1 incorrect implementation of authentication algorithm
A vulnerability, which was classified as very critical, was found in Microsoft Windows 11 24H2/Server 2022 23H2/Server 2025. Affected is an unknown function of the component NTLM V1. The manipulation leads to incorrect implementation of authentication algorithm. This vulnerability is traded as CVE-2025-21311. It is possible to launch the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.