Privilege escalation in Microsoft Windows Common Log File System driver

1) Heap-based buffer overflow

EUVDB-ID: #VU101394

Risk: High

CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2024-49138

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the Windows Common Log File System driver. A local user can trigger a heap-based buffer overflow and execute arbitrary code with SYSTEM privileges.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: before 10 21H2 10.0.19044.5247, 10 22H2 10.0.19045.5247, 10 1507 10.0.10240.20857, 10 1607 10.0.14393.7606, 10 1809 10.0.17763.6659, 11 22H2 10.0.22621.4602, 11 23H2 10.0.22631.4602, 11 24H2 10.0.26100.2528, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247

Windows Server: before 2008 R2 6.1.7601.27467, 2008 6.0.6003.23016, 2012 R2 6.3.9600.22318, 2012 6.2.9200.25222, 2016 10.0.14393.7606, 2022 10.0.20348.2908, 2022 10.0.20348.2966, 2022 23H2 10.0.25398.1308, 2025 10.0.26100.2528, 2025 10.0.26100.2605, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467

CPE2.3

• cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:*:*:*:*:*:*:*:*

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-49138

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.