Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since December 9, 2025.
CVE-2025-62221
Microsoft Windows Use After Free Vulnerability
Added to KEV December 9, 2025
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2025-62221
- CWE
- CWE-416
- Affected products
- Windows · Microsoft Windows · Microsoft
What happened
Microsoft Windows Cloud Files Mini Filter Driver contains a use after free vulnerability that can allow an authorized attacker to elevate privileges locally.
What it means for your business
Microsoft Windows is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2025-62221). Microsoft Windows Cloud Files Mini Filter Driver contains a use after free vulnerability that can allow an authorized attacker to elevate privileges locally. CISA remediation due date: 2025-12-30. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: December 30, 2025
Sources
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