Microsoft Windows Container Isolation FS Filter Driver Information Disclosure Vulnerability

A vulnerability allowing out-of-bounds read has been identified in the Windows Container Isolation FS Filter Driver (unionfs.sys). This issue allows an authorized attacker to locally disclose information by exploiting the vulnerability, which could involve accessing certain kernel memory content.

Impact

Exploitation of this vulnerability could lead to unauthorized information disclosure, specifically allowing access to certain kernel memory contents.

Remediation

Users can download the security update for this vulnerability through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5101649 for Windows 11 Version 26H1 on ARM64-based Systems and KB5095051 for Windows 11 Version 26H1 on x64-based Systems.