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.
History

Tue, 20 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 19 Oct 2026 08:45:00 +0000

Type Values Removed Values Added
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.
Title Lack of integrity checks in Mobatek’s MobaXterm
First Time appeared Mobatek
Mobatek mobaxterm
Weaknesses CWE-345
CPEs cpe:2.3:a:mobatek:mobaxterm:26.4_ga:*:*:*:*:*:*:*
Vendors & Products Mobatek
Mobatek mobaxterm
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: INCIBE

Published: 2026-10-19T08:19:20.794Z

Updated: 2026-10-20T18:20:13.384Z

Reserved: 2026-10-19T07:34:11.465Z

Link: CVE-2026-112161

cve-icon Vulnrichment

Updated: 2026-10-20T18:20:04.768Z

cve-icon NVD

Status : Deferred

Published: 2026-10-19T09:17:08.097

Modified: 2026-10-20T19:17:31.230

Link: CVE-2026-112161

cve-icon Redhat

No data.