high · CVSS v3 7.3 · CVSS v4 8.5 · EPSS 0.00073

CVE-2026-112161

MobaXterm Personal Edition (Portable) 26.4 GA extracts the CygUtils64.plugin file without first verifying its integrity.…

Description

MobaXterm Personal Edition (Portable) 26.4 GA extracts the CygUtils64.plugin file without first verifying its integrity. A local attacker with write permissions on this file can replace the ‘bin/cygwin1.dll’ library contained within it with a malicious library. When the victim opens a Local Shell session or uses a Cygwin-based function, the application extracts the component and loads the tampered library, executing code with the victim’s permissions. Exploitation requires write access to the plugin and does not, in itself, involve privilege escalation.

Scores

Severity
high
CVSS v2
4.4
CVSS v3
7.3
CVSS v4
8.5
EPSS
0.00073

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