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
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.
Yes. CVE-2024-49138 is known to be exploited in the wild, first recorded on 10 December 2024. Treat it as urgent.
How severe is CVE-2024-49138?
Critical severity, with a CVSS score of 7.8, published 10 December 2024.
Which products and versions are affected?
Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2; Microsoft Windows 11 22H2, 23H2, 24H2; Microsoft Windows Server 2008 SP2, R2 SP1.
Is there a fix for CVE-2024-49138?
A patch was published on 2024-12-11: MSRC update guide and patch information released. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2024-49138 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2024-49138?
Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
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.