CVE-2026-88149 | Microsoft Windows up to Server 2025 Ancillary Function Driver for WinSock double free

October 14, 2026 Yanac

A vulnerability described as very critical has been identified in Microsoft Windows. Affected by this vulnerability is an unknown functionality of the component Ancillary Function Driver for WinSock. Executing a manipulation can lead to double free.

This vulnerability is tracked as CVE-2026-88149. The attack is restricted to local execution. No exploit exists.

It is advisable to implement a patch to correct this issue.VulDB Recent EntriesRead More