CVE-2025-62221: Microsoft Windows Use After Free Vulnerability
Microsoft Windows Cloud Files Mini Filter Driver contains a use after free vulnerability that can allow an authorized attacker to elevate privileges locally.
| Vendor | Microsoft |
|---|---|
| Product | Windows |
| Date added to KEV | 2025-12-09 |
| Due date (BOD 22-01) | 2025-12-30 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-416 |
| 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. |
What to do
- Identify every instance of Microsoft Windows in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's 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.
- Federal civilian agencies must act by 2025-12-30 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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