CVE-2025-21182 Details
Description
Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
An elevation of privilege vulnerability has been identified in the Windows Resilient File System (ReFS) Deduplication Service. This vulnerability allows an attacker to exploit a race condition, potentially leading to unauthorized access or privileges. It affects multiple Windows 11 ARM64-based systems, Windows 11 x64-based systems, Windows Server 2025, and Windows Server 2025 (Server Core installation).
Users can apply the security update KB5051987 to address this vulnerability. This update is available through the Microsoft Update Catalog.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 1, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21182 | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
| CWE-415 | Double Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 11 24h2 | < 10.0.26100.3107 |
CPE
Remediation
| |
| microsoft windows server 2025 | < 10.0.26100.3107 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 25, 2025 | Initial Analysis | [email protected] |
| Feb 11, 2025 | New CVE Received | [email protected] |