CVE-2025-62221
High 7.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Windows Use After Free Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Metrics
- CVSS 3.1
-
7.8 (HIGH)
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 3% (percentile: 85) as of 1 November 2026
- CWE
- CWE-416
Affected products
microsoft: windows 10 1809; microsoft: windows 10 21h2; microsoft: windows 10 22h2; microsoft: windows 11 23h2; microsoft: windows 11 24h2; microsoft: windows 11 25h2; microsoft: windows server 2019; microsoft: windows server 2022; microsoft: windows server 2022 23h2; microsoft: windows server 2025
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62221 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025… US Government Resource