Actively exploited in the wild
Microsoft Windows Use After Free Vulnerability
Microsoft - Windows · Listed in the CISA KEV since 2025-12-09. This indicates confirmed attacks in production environments.
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.
CVE-2025-62221
HighCVSS 7.8KEVSummary
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with local access to the system can exploit the vulnerability to escalate privileges, potentially leading to full control over the Windows system.
Recommendation
Immediately install Windows security updates containing the fix for CVE-2025-62221.
Other vulnerabilities in Windows Cloud Files Mini Filter Driver
See all- CVE-2026-35418High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-34337High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-33835High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2020-17103High
A vulnerability in the Windows Cloud Files Mini Filter Driver allows for elevation of privilege. An attacker can exploit this flaw to gain higher privileges on the system.
- CVE-2024-30085High
A vulnerability in the Windows Cloud Files Mini Filter Driver allows elevation of privilege. The flaw stems from improper input validation, potentially enabling an attacker to execute code in kernel context.
- CVE-2023-36036HighActively exploited
An elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver. It may allow an attacker to gain higher privileges on the system.
- CVE-2026-83991Medium
Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.
- CVE-2026-80093High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-69279High
A use-after-free vulnerability in the Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-62771High
Heap-based buffer overflow in the Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.