Junglewise Threat Intelligence

CVE-2024-49138: Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability

CVE-2024-49138 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2024-12-10

Technologies: Microsoft Windows Server 2008, Microsoft Windows, Microsoft Windows 11, Microsoft Windows 10. Vendors: Microsoft.

Executive brief

A heap-based buffer overflow vulnerability in the Microsoft Windows Common Log File System (CLFS) driver allows a local attacker to gain elevated privileges. The vulnerability has been observed being exploited in the wild.

Affected products

  • Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2
  • Microsoft Windows 11 22H2, 23H2, 24H2
  • Microsoft Windows Server 2008 SP2, R2 SP1

Timeline

  • 2024-12-10: disclosed: Published date and CISA KEV addition date.
  • 2024-12-10: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
  • 2024-12-11: patched: MSRC update guide and patch information released.
  • 2024-12-10: exploited: Confirmed exploited in the wild per CISA KEV and advisory metadata.

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