All vulnerabilities
CVE-2024-49138

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

Microsoft WindowsOperating systems
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationExploited in the wildAdded to KEV 10 Dec 2024CISA KEV
Exploit odds (EPSS)26.2%Chance of exploitation activity in the next 30 days, higher than 98% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.0.10240.20857Also 10.0.14393.7606, 10.0.17763.6659 and 11 moreCVE List
Federal deadline31 Dec 2024Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

  • 10.0.10240.20857Windows 10 Version 1507CVE List
  • 10.0.14393.7606Windows 10 Version 1607CVE List
  • 10.0.17763.6659Windows 10 Version 1809CVE List
  • 10.0.19044.5247Windows 10 Version 21H2CVE List
  • 10.0.19045.5247Windows 10 Version 22H2CVE List
  • 10.0.22621.4602Windows 11 version 22H2CVE List
Show all 26 fixed versions
  • 10.0.22631.4602Windows 11 version 22H3CVE List
  • 10.0.22631.4602Windows 11 Version 23H2CVE List
  • 10.0.26100.2605Windows 11 Version 24H2CVE List
  • 6.0.6003.23016Windows Server 2008 Service Pack 2CVE List
  • 6.1.7601.27467Windows Server 2008 R2 Service Pack 1CVE List
  • 6.1.7601.27467Windows Server 2008 R2 Service Pack 1 (Server Core installation)CVE List
  • 6.0.6003.23016Windows Server 2008 Service Pack 2CVE List
  • 6.0.6003.23016Windows Server 2008 Service Pack 2 (Server Core installation)CVE List
  • 6.2.9200.25222Windows Server 2012CVE List
  • 6.2.9200.25222Windows Server 2012 (Server Core installation)CVE List
  • 6.3.9600.22318Windows Server 2012 R2CVE List
  • 6.3.9600.22318Windows Server 2012 R2 (Server Core installation)CVE List
  • 10.0.14393.7606Windows Server 2016CVE List
  • 10.0.14393.7606Windows Server 2016 (Server Core installation)CVE List
  • 10.0.17763.6659Windows Server 2019CVE List
  • 10.0.17763.6659Windows Server 2019 (Server Core installation)CVE List
  • 10.0.20348.2966Windows Server 2022CVE List
  • 10.0.25398.1308Windows Server 2022, 23H2 Edition (Server Core installation)CVE List
  • 10.0.26100.2605Windows Server 2025CVE List
  • 10.0.26100.2605Windows Server 2025 (Server Core installation)CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 10 Dec 2024Added to CISA KEVCISA KEV
  2. 10 Dec 2024, 17:49 UTCPublishedCVE List
  3. 22 Apr 2025Exploit code publicExploit-DB

Public exploit code and templates 1

  • Local exploitMicrosoft Windows 11 23h2 - CLFS.sys Elevation of Privilege 22 Apr 2025Exploit-DB

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Microsoft Windows Common Log File System (CLFS) driver contains a heap-based buffer overflow vulnerability that allows a local attacker to escalate privileges.

Text from CVE List

Affected versions 26

  • Windows 10 Version 1507affected: 10.0.10240.0 before 10.0.10240.20857CVE List
  • Windows 10 Version 1607affected: 10.0.14393.0 before 10.0.14393.7606CVE List
  • Windows 10 Version 1809affected: 10.0.17763.0 before 10.0.17763.6659CVE List
  • Windows 10 Version 21H2affected: 10.0.19043.0 before 10.0.19044.5247CVE List
  • Windows 10 Version 22H2affected: 10.0.19045.0 before 10.0.19045.5247CVE List
  • Windows 11 version 22H2affected: 10.0.22621.0 before 10.0.22621.4602CVE List
  • Windows 11 version 22H3affected: 10.0.22631.0 before 10.0.22631.4602CVE List
  • Windows 11 Version 23H2affected: 10.0.22631.0 before 10.0.22631.4602CVE List
  • Windows 11 Version 24H2affected: 10.0.26100.0 before 10.0.26100.2605CVE List
  • Windows Server 2008 Service Pack 2affected: 6.0.6003.0 before 6.0.6003.23016CVE List
  • Windows Server 2008 R2 Service Pack 1affected: 6.1.7601.0 before 6.1.7601.27467CVE List
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation)affected: 6.1.7601.0 before 6.1.7601.27467CVE List
  • Windows Server 2008 Service Pack 2affected: 6.0.6003.0 before 6.0.6003.23016CVE List
  • Windows Server 2008 Service Pack 2 (Server Core installation)affected: 6.0.6003.0 before 6.0.6003.23016CVE List
  • Windows Server 2012affected: 6.2.9200.0 before 6.2.9200.25222CVE List
  • Windows Server 2012 (Server Core installation)affected: 6.2.9200.0 before 6.2.9200.25222CVE List
  • Windows Server 2012 R2affected: 6.3.9600.0 before 6.3.9600.22318CVE List
  • Windows Server 2012 R2 (Server Core installation)affected: 6.3.9600.0 before 6.3.9600.22318CVE List
  • Windows Server 2016affected: 10.0.14393.0 before 10.0.14393.7606CVE List
  • Windows Server 2016 (Server Core installation)affected: 10.0.14393.0 before 10.0.14393.7606CVE List
  • Windows Server 2019affected: 10.0.17763.0 before 10.0.17763.6659CVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before 10.0.17763.6659CVE List
  • Windows Server 2022affected: 10.0.20348.0 before 10.0.20348.2966CVE List
  • Windows Server 2022, 23H2 Edition (Server Core installation)affected: 10.0.25398.0 before 10.0.25398.1308CVE List
  • Windows Server 2025affected: 10.0.26100.0 before 10.0.26100.2605CVE List
  • Windows Server 2025 (Server Core installation)affected: 10.0.26100.0 before 10.0.26100.2605CVE List

References 6