Cybercriminals are abusing a post-compromise zero-day vulnerability in the Windows Common Log File System (CLFS) to deploy ransomware. The Microsoft Threat Intelligence Center (MSTIC) and Microsoft ...

A joint investigation by the Microsoft Threat Intelligence Center and Microsoft Security Response Center found that a zero-day vulnerability in the Windows Common Log File System had been exploited by ...

Microsoft adds HMAC protection to CLFS in Windows 11 25H2 and Server 2025, improving security while increasing disk and I/O ...

Multiple ransomware groups seen abusing Windows Common Log File System bug Among the abusers are RansomEXX and Play The bug is used to drop backdoors, encryptors, and more Notorious ransomware actors ...

A new report out today from cybersecurity company Fortra LLC is warning of a vulnerability in all versions of Windows 10 and 11 that, if triggered, could cause system instability and a denial of ...

Microsoft on Tuesday released software updates to fix at least 70 vulnerabilities in Windows and related products, including five zero-day flaws that are already seeing active exploitation. Adding to ...

A newly discovered vulnerability, identified as CVE-2024-6768, has surfaced in the Common Log File System (CLFS.sys) driver of Windows. This issue, identified by Fortra cybersecurity researcher, ...