CVE-2026-97790

No fix known EPSS <1%CVSS 5.5

Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.

Published 2026-10-13 · CVE record · OSV

Products: Microsoft Windows 11 Version 24H2, Microsoft Windows 11 Version 25H2, Microsoft Windows 11 version 26H1, Microsoft Windows 11 Version 26H2, Microsoft Windows Server 2022, Microsoft Windows Server 2025, Microsoft Windows Server 2025 (Server Core installation)