Windows under attack: 0-day vulnerability used by ransomware group

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Windows under attack: 0-day vulnerability used by ransomware group

09/04/2025, 17:15:03

Exploitation of CLFS zero-day leads to ransomware activity

Exploitation of CLFS zero-day leads to ransomware activity | Microsoft Security Blog

https://www.microsoft.com/en-us/security/blog/2025/04/08/exploitation-of-clfs-zero-day-leads-to-ransomware-activity/

Microsoft Threat Intelligence Center (MSTIC) and Microsoft Security Response Center (MSRC) have discovered post-compromise exploitation of a newly discovered zero-day vulnerability in the Windows Common Log File System (CLFS) against a small number of targets. Microsoft released security updates to address the vulnerability, tracked as CVE 2025-29824, on April 8, 2025.
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