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

Source: https://junglewise.ai/threats/cve-2026-112161-mobaxterm-personal-edition-portable-26-4-ga-extracts-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-19. Updated: 2026-10-19  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/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

- [https://www.incibe.es/en/incibe-cert/notices/aviso/lack-integrity-checks-mobateks-mobaxterm](https://www.incibe.es/en/incibe-cert/notices/aviso/lack-integrity-checks-mobateks-mobaxterm)