CVE-2025-21182

Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability

CVE-2025-21182 is fixed in 4 products on 1 platform, first by KB5051987, released February 11, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.4

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0053

44th percentile

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 11 Version 24H2 for ARM64-based Systems	26100.3194	KB5051987	Feb 11, 2025
Windows 11 Version 24H2 for ARM64-based Systems	26100.3107	KB5052105	Feb 11, 2025
Windows 11 Version 24H2 for x64-based Systems	26100.3194	KB5051987	Feb 11, 2025
Windows 11 Version 24H2 for x64-based Systems	26100.3107	KB5052105	Feb 11, 2025
Windows Server 2025	26100.3194	KB5051987	Feb 11, 2025
Windows Server 2025	26100.3107	KB5052105	Feb 11, 2025
Windows Server 2025 (Server Core installation)	26100.3194	KB5051987	Feb 11, 2025
Windows Server 2025 (Server Core installation)	26100.3107	KB5052105	Feb 11, 2025

Details

Published
February 11, 2025
Weakness
Double Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21182

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-2025-21182">CVE-2025-21182 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.