Windows 11 and Server 2025 Exposed to High-Severity Brokering File System Vulnerability
A serious weakness has been found in Windows 11 and Windows Server 2025 that could let someone with access to a device gain deeper control over it. This matters most if a computer is shared, exposed to untrusted apps, or not kept up to date with Microsoft fixes.
Who is at risk
People and organizations using Windows 11 or Windows Server 2025 are most at risk, especially on shared or work-managed computers.
What to watch for
Watch for unexpected app behavior, unfamiliar software appearing, unusual account or settings changes, or signs that someone else may have used the device.
What to do
Install the latest Windows security updates right away, restart the device after updating, and avoid installing untrusted apps or files until systems are fully patched.