CVE-2026-88139 | Microsoft Windows up to Server 2025 Kernel use after free

October 14, 2026 Yanac

A vulnerability classified as very critical was found in Microsoft Windows 11 24H2/11 25H2/11 26H1/11 26H2/Server 2025. The impacted element is an unknown function of the component Kernel. Such manipulation leads to use after free.

This vulnerability is documented as CVE-2026-88139. The attack needs to be performed locally. There is not any exploit available.

A patch should be applied to remediate this issue.VulDB Recent EntriesRead More