Microsoft fixes actively exploited Windows CLFS zero-day (CVE-2025-29824)
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2024-49138 | Local Privilege Escalation via Heap Overflow in Microsoft Windows CLFS Driver | 7.8 | 26% | KEVPoC ×2 | KEV |
| CVE-2025-26670 | Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to execute code over a network | 8.1 group max | 11% | ||
| CVE-2025-27480 | Use after free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network | 8.1 | 12% | ||
| CVE-2025-27482 | Sensitive data storage in improperly locked memory in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network | 8.1 | 2% | ||
| CVE-2025-29824 | Use-After-Free Privilege Escalation in Microsoft Windows CLFS Driver (Actively Exploited) | 7.8 | 19% | KEVRansomwarePoC ×2 | KEV |
From the original article
4 min read at helpnetsecurity.com
April 2025 Patch Tuesday is here, and Microsoft has delivered fixes for 120+ vulnerabilities, including a zero-day (CVE-2025-29824) that’s under active attack. CVE-2025-29824 is a user-after-free vulnerability in the Windows Common Log File System (CLFS) that can be – and is being – exploited by attackers to elevate their privileges to SYSTEM on previously compromised Windows machines.
By @zeljkazorz · helpnetsecurity.com
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