CVE-2026-112161: MobaXterm Personal Edition missing integrity verification in plugin extraction

CVE-2026-112161 · Severity: info · Published 2026-10-19

MobaXterm Personal Edition is a terminal emulator and file transfer application used by IT professionals. Version 26.4 GA extracts plugin files without verifying they haven't been tampered with, allowing a local attacker with write access to replace a critical library with malicious code that runs when the user launches a shell session. This requires the attacker to already have write permissions to the application directory.

Vendors: Mobatek.

Quick answers

Is CVE-2026-112161 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-112161 being exploited in the wild.
How severe is CVE-2026-112161?
Informational severity, published 19 October 2026.
Which products and versions are affected?
Mobatek MobaXterm Personal Edition 26.4 GA.
Is there a fix for CVE-2026-112161?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-112161 attacked?
It is attacked with local access, in a web application.
Am I affected by CVE-2026-112161?
Check whether you run Mobatek MobaXterm Personal Edition at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a missing integrity check on the CygUtils64.plugin file during extraction; specifically, the cygwin1.dll library within the plugin is loaded without validation. An attacker with local write access can swap this DLL for a malicious one, causing code execution under the victim's account when a Local Shell session or Cygwin-based function is invoked. No privilege escalation occurs—the malicious code runs at the user's privilege level.

Affected products

  • Mobatek MobaXterm Personal Edition 26.4 GA

Timeline

  • 2026-10-19: disclosed

References

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