CVE-2026-62775

Microsoft · Published August 11, 2026

5.5

CVSS v3.1

MEDIUM

Patch availableGet patch

Description

Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure Vulnerability. Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.

Affected Products

Windows 11 version 26H1 for x64-based Systems
Windows 11 Version 26H1 for ARM64-based Systems

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C