CVE-2025-29824

A use-after-free vulnerability in the Windows CLFS driver allows local privilege escalation and is actively exploited by ransomware.

This use-after-free flaw in the Windows Common Log File System driver enables an authorized attacker to escalate privileges locally, and it is already being exploited in the wild by ransomware groups. DIB organizations must ensure their Windows systems are patched immediately, as this is a KEV-list vulnerability with no remote code execution capability but significant local impact. The failure highlights the ongoing risk of unpatched Microsoft vulnerabilities being weaponized by threat actors.

Shame score — A critical, actively exploited vulnerability in a core Windows component that is already being used by ransomware groups demonstrates severe negligence and a failure to protect the baseline operating system.