CVE-2026-97790 | Microsoft Windows up to Server 2025 Windows Container Isolation FS Filter Driver unionfs.sys link following

October 14, 2026 Yanac

A vulnerability was found in Microsoft Windows up to Server 2025 and classified as problematic. The affected element is an unknown function of the file unionfs.sys of the component Windows Container Isolation FS Filter Driver. The manipulation results in link following.

This vulnerability is identified as CVE-2026-97790. The attack is only possible with local access. There is not any exploit available.

It is best practice to apply a patch to resolve this issue.VulDB Recent EntriesRead More