December 9, 2025 · Applied Cybernetics Group
CVE-2025-62221 — Microsoft Windows
Microsoft Windows Use After Free Vulnerability
- Added to KEV
2025-12-09- Federal due date
2025-12-30- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 81.6th percentile (score 0.015, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-62221
CISA short description
Microsoft Windows Cloud Files Mini Filter Driver contains a use after free vulnerability that can allow an authorized attacker to elevate privileges locally.
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.