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CVE-2025-21418 | Microsoft Windows up to Server 2025 Ancillary Function Driver for WinSock heap-based overflow
A vulnerability was found in Microsoft Windows. It has been classified as critical. Affected is an unknown function of the component Ancillary Function Driver for WinSock. The manipulation leads to heap-based buffer overflow. This vulnerability is traded as CVE-2025-21418. Local access is required to approach this attack. There is no exploit available. It is recommended to apply a patch to fix this issue.