CVE-2025-32706
Published: May 13, 2025
Official Description
Microsoft Windows Common Log File System (CLFS) Driver contains a heap-based buffer overflow vulnerability that allows an authorized attacker to elevate privileges locally.
CISA KEV Advisory
Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability
Microsoft Windows Common Log File System (CLFS) Driver contains a heap-based buffer overflow 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 is a high-severity heap-based buffer overflow vulnerability in the Microsoft Windows Common Log File System (CLFS) Driver that allows an authorized attacker to elevate privileges locally. Despite a low EPSS score of 0.01300, its inclusion in CISA's KEV catalog confirms it has been actively exploited.
This vulnerability has been actively exploited in the wild. Exploitation requires an attacker to have local access to the system with authorization.
Apply all available security updates for Microsoft Windows to patch the CLFS driver. Implement the principle of least privilege to restrict user permissions and reduce the impact of local privilege escalation.
Technical Analysis
CVE-2025-32706 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-2025-32706 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-2025-32706 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