CVE-2025-21182
vulnerability analysis and mitigation

Overview

Windows Resilient File System (ReFS) Deduplication Service contains an Elevation of Privilege Vulnerability, identified as CVE-2025-21182. The vulnerability was disclosed on February 11, 2025, affecting Windows Server 2025 and Windows 11 Version 24H2 systems (AttackerKB, CVE).

Technical details

The vulnerability has been assigned a CVSS v3.1 Base Score of 7.4 (High severity). The attack vector is Local (AV:L) with High attack complexity (AC:H), requiring no privileges (PR:N) and no user interaction (UI:N). The scope is unchanged (S:U), with High impact on confidentiality, integrity, and availability (C:H/I:H/A:H) (AttackerKB).

Impact

If successfully exploited, this vulnerability could allow an attacker to gain elevated privileges on affected systems. The impact metrics indicate potential high-severity consequences for system confidentiality, integrity, and availability (AttackerKB).

Mitigation and workarounds

The vulnerability affects Windows Server 2025 (version 10.0.26100.3194) and Windows 11 Version 24H2 (version 10.0.26100.3194). Users should apply the appropriate security updates when available from Microsoft (CVE).

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