CVE-2025-53142

Microsoft Brokering File System Elevation of Privilege Vulnerability

CVE-2025-53142 is fixed in 9 products on 1 platform, first by KB5063875, released August 12, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.0

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0036

29th percentile

<p>Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 11 Version 22H2 for ARM64-based Systems		KB5063875	Aug 12, 2025
Windows 11 Version 22H2 for x64-based Systems		KB5063875	Aug 12, 2025
Windows 11 Version 23H2 for ARM64-based Systems		KB5063875	Aug 12, 2025
Windows 11 Version 23H2 for x64-based Systems		KB5063875	Aug 12, 2025
Windows 11 Version 24H2 for ARM64-based Systems	26100.4946	KB5063878	Aug 12, 2025
Windows 11 Version 24H2 for ARM64-based Systems	26100.4851	KB5064010	Aug 12, 2025
Windows 11 Version 24H2 for x64-based Systems	26100.4946	KB5063878	Aug 12, 2025
Windows 11 Version 24H2 for x64-based Systems	26100.4851	KB5064010	Aug 12, 2025
Windows Server 2022, 23H2 Edition (Server Core installation)	25398.1791	KB5063899	Aug 12, 2025
Windows Server 2025	26100.4946	KB5063878	Aug 12, 2025
Windows Server 2025	26100.4851	KB5064010	Aug 12, 2025
Windows Server 2025 (Server Core installation)	26100.4946	KB5063878	Aug 12, 2025
Windows Server 2025 (Server Core installation)	26100.4851	KB5064010	Aug 12, 2025

Details

Published
August 12, 2025
Weakness
Use After Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53142

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/cve/CVE-2025-53142">CVE-2025-53142 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Is this on your machines?

Patchblox finds every install below the fixed version on Windows, macOS and Linux, and updates them through your release rings.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.