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CVE-2026-6421

7.0 · HIGH

A vulnerability has been found in Mobatek MobaXterm Home Edition up to 26.1.

Published Apr 17, 2026CWE-426EPSS 0.16%

Overview

CVE-2026-6421 is a high-severity vulnerability. It was published on April 17, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A vulnerability has been found in Mobatek MobaXterm Home Edition up to 26.1. This affects an unknown part in the library msimg32.dll. The manipulation leads to uncontrolled search path. An attack has to be approached locally. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 26.2 is able to mitigate this issue. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdownload.mobatek.net/2622026032581854/MobaXterm_Installer_v26.2.zipRefdrive.google.com/file/d/17bbNDzfoD3NNPlUMkSYs8bVzVbbwddnU/viewRefmobaxterm.mobatek.net/download-home-edition.htmlRefvuldb.com/submit/778851Refvuldb.com/vuln/358020Refvuldb.com/vuln/358020/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-6421?

CVE-2026-6421 is a high-severity vulnerability. It was published on April 17, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2026-6421?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-6421?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-6421?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-6421 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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