Risk Letters

Exploited vulnerability

CVE-2025-29824

TLP:CLEAR

Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability

Microsoft Windows Common Log File System (CLFS) Driver contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

Facts

  • Vendor: Microsoft
  • Product: Windows
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 19.3 %
  • On CISA's Known Exploited Vulnerabilities list since: 8 April 2025
  • First known exploitation: 8 April 2025
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 29 April 2025
  • Weakness: CWE-416
  • First seen by Risk Letters: 8 April 2025

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD