CVE-2026-42911 | Microsoft Windows up to Server 2025 Ancillary Function Driver for WinSock use after free

June 9, 2026 Yanac

A vulnerability labeled as critical has been found in Microsoft Windows. Affected is an unknown function of the component Ancillary Function Driver for WinSock. Executing a manipulation can lead to use after free.

This vulnerability is registered as CVE-2026-42911. The attack needs to be launched locally. No exploit is available.

The affected component should be upgraded.VulDB Recent EntriesRead More