CVE-2025-32701
Published: May 13, 2025
Official Description
Microsoft Windows Common Log File System (CLFS) Driver contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.
CISA KEV Advisory
Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability
Microsoft Windows Common Log File System (CLFS) Driver contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Risk Analysis
This high-severity use-after-free vulnerability in the Microsoft Windows Common Log File System (CLFS) Driver allows an authorized local attacker to elevate privileges. Its inclusion in CISA's KEV catalog and an EPSS score of 0.01544 indicate confirmed exploitation and a notable likelihood of future exploitation.
This vulnerability is actively being exploited in the wild, confirming its use by attackers. Exploitation requires an authorized attacker with local access.
Apply the latest security updates from Microsoft for the Windows CLFS Driver. Implement the principle of least privilege to limit potential attacker access.
Technical Analysis
CVE-2025-32701 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2025-32701 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-32701 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1