Double Free in Microsoft Windows_11_24h2
CVE-2025-21183
Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
Vulnerability class: Double Free
EPSS: 0.005 (38.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows_11_24h2
- Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
- Microsoft Windows Server 2025 — versions 10.0.26100.0
- Microsoft Windows_server_2025
- Microsoft Windows Server 2025 (Server Core Installation) — versions 10.0.26100.0
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, Patch, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-21183?
- CVE-2025-21183 is a high-severity vulnerability in Microsoft Windows_11_24h2, classified under Double Free. CVSS score: 7.4/10. Published 2025-02-11.
- How severe is CVE-2025-21183?
- High severity. CVSS v3 base score is 7.4 out of 10.