CVE-2026-40397 | Microsoft Windows up to Server 2025 Common Log File System Driver integer underflow
A vulnerability, which was classified as critical, has been found in Microsoft Windows. This affects an unknown part of the component Common Log File System Driver. Performing a manipulation results in integer underflow.
This vulnerability is cataloged as CVE-2026-40397. The attack must be initiated from a local position. There is no exploit available.
It is advisable to upgrade the affected component.