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CSIRT Panamá Aviso 2026-oct-19: Vulnerabilidad Alta en Mobatek MobaXterm que permite ejecución de código mediante una biblioteca manipulada — CVE-2026-112161

Mobatek MobaXterm · CVE-2026-112161
0 news outlets1 CERTs and agencies0 researchers

What is it?

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.

Evidence

CERTs and agencies (1)

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
8.5
EPSS
0.1%
First seen
3 d ago
Status
confirmed

All Mobatek vulnerabilities