CVEs / CVE-2024-49138
CVE-2024-49138: Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability
- Known exploited in the CISA KEV catalog since 10 Dec 2024
- high 7.8 CVSS 3.1 (from the CNA)
- EPSS 26.2% chance of exploitation in the next 30 days, higher than 97% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Microsoft Windows Common Log File System (CLFS) driver contains a heap-based buffer overflow vulnerability that allows a local attacker to escalate privileges.
Description
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1507 | from 10.0.10240.0, before 10.0.10240.20857 | 10.0.10240.20857 |
| Microsoft Windows 10 Version 1607 | from 10.0.14393.0, before 10.0.14393.7606 | 10.0.14393.7606 |
| Microsoft Windows 10 Version 1809 | from 10.0.17763.0, before 10.0.17763.6659 | 10.0.17763.6659 |
| Microsoft Windows 10 Version 21H2 | from 10.0.19043.0, before 10.0.19044.5247 | 10.0.19044.5247 |
| Microsoft Windows 10 Version 22H2 | from 10.0.19045.0, before 10.0.19045.5247 | 10.0.19045.5247 |
| Microsoft Windows 11 version 22H2 | from 10.0.22621.0, before 10.0.22621.4602 | 10.0.22621.4602 |
| Microsoft Windows 11 version 22H3 | from 10.0.22631.0, before 10.0.22631.4602 | 10.0.22631.4602 |
| Microsoft Windows 11 Version 23H2 | from 10.0.22631.0, before 10.0.22631.4602 | 10.0.22631.4602 |
| Microsoft Windows 11 Version 24H2 | from 10.0.26100.0, before 10.0.26100.2605 | 10.0.26100.2605 |
| Microsoft Windows Server 2008 Service Pack 2 | from 6.0.6003.0, before 6.0.6003.23016 | 6.0.6003.23016 |
| Microsoft Windows Server 2008 R2 Service Pack 1 | from 6.1.7601.0, before 6.1.7601.27467 | 6.1.7601.27467 |
| Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) | from 6.1.7601.0, before 6.1.7601.27467 | 6.1.7601.27467 |
| Microsoft Windows Server 2008 Service Pack 2 | from 6.0.6003.0, before 6.0.6003.23016 | 6.0.6003.23016 |
| Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) | from 6.0.6003.0, before 6.0.6003.23016 | 6.0.6003.23016 |
| Microsoft Windows Server 2012 | from 6.2.9200.0, before 6.2.9200.25222 | 6.2.9200.25222 |
| Microsoft Windows Server 2012 (Server Core installation) | from 6.2.9200.0, before 6.2.9200.25222 | 6.2.9200.25222 |
| Microsoft Windows Server 2012 R2 | from 6.3.9600.0, before 6.3.9600.22318 | 6.3.9600.22318 |
| Microsoft Windows Server 2012 R2 (Server Core installation) | from 6.3.9600.0, before 6.3.9600.22318 | 6.3.9600.22318 |
| Microsoft Windows Server 2016 | from 10.0.14393.0, before 10.0.14393.7606 | 10.0.14393.7606 |
| Microsoft Windows Server 2016 (Server Core installation) | from 10.0.14393.0, before 10.0.14393.7606 | 10.0.14393.7606 |
| Microsoft Windows Server 2019 | from 10.0.17763.0, before 10.0.17763.6659 | 10.0.17763.6659 |
| Microsoft Windows Server 2019 (Server Core installation) | from 10.0.17763.0, before 10.0.17763.6659 | 10.0.17763.6659 |
| Microsoft Windows Server 2022 | from 10.0.20348.0, before 10.0.20348.2966 | 10.0.20348.2966 |
| Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) | from 10.0.25398.0, before 10.0.25398.1308 | 10.0.25398.1308 |
| Microsoft Windows Server 2025 | from 10.0.26100.0, before 10.0.26100.2605 | 10.0.26100.2605 |
| Microsoft Windows Server 2025 (Server Core installation) | from 10.0.26100.0, before 10.0.26100.2605 | 10.0.26100.2605 |
Exploitation
| In CISA KEV since | 10 Dec 2024 |
|---|---|
| Due date for US federal agencies | 31 Dec 2024 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-122 |
References
- CVE-2024-49138 on NVD
- CVE-2024-49138 in the CISA KEV catalog
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2024-49138 (cited by CISA)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49138 Patch, Vendor Advisory
- https://packetstorm.news/files/id/190585/ Exploit, VDB Entry
- https://www.exploit-db.com/exploits/52270 Exploit, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-49138 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.