CVE-2025-21183
vulnerability analysis and mitigation

Overview

Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability affects Windows 11 Version 24H2 and Windows Server 2025. The vulnerability was disclosed on February 11, 2025, and received a CVSS v3.1 base score of 7.4 (High) (NVD, Microsoft Advisory).

Technical details

The vulnerability has been assigned a CVSS v3.1 vector of CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a local attack vector with high attack complexity, requiring no privileges or user interaction. The vulnerability has been classified under CWE-415 (Double Free) (NVD).

Impact

The vulnerability affects confidentiality, integrity, and availability with high severity ratings across all three categories. It potentially allows attackers to elevate privileges on affected systems (NVD).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability. The fixes are available for Windows 11 Version 24H2 (version 10.0.26100.3194) and Windows Server 2025 (version 10.0.26100.3194) (NVD).

Additional resources


SourceThis report was generated using AI

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Get a personalized demo

Ready to see Wiz in action?

“Best User Experience I have ever seen, provides full visibility to cloud workloads.”
David EstlickCISO
“Wiz provides a single pane of glass to see what is going on in our cloud environments.”
Adam FletcherChief Security Officer
“We know that if Wiz identifies something as critical, it actually is.”
Greg PoniatowskiHead of Threat and Vulnerability Management