CVE-2026-25603: Path Traversal vulnerability in Linksys MR9600, Linksys MX4200

Published Feb 24, 2026
·
Updated

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Linksys MR9600, Linksys MX4200 allows that contents of a USB drive partition can be mounted in an arbitrary location of the file system. This may result in the execution of shell scripts in the context of a root user.This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

Affected Software

6 affected components
LinkSys MR9600
LinkSys MX4200
All of the following
LinkSys Mr9600 Firmware=1.0.4.205530
LinkSys MR9600
All of the following
LinkSys Mx4200 Firmware=1.0.4.205530
LinkSys MX4200

Event History

Feb 24, 2026
CVE Published
via MITRE·05:14 PM
Data Sourced
via MITRE·05:14 PM
DescriptionWeakness
Data Sourced
via NVD·06:29 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-25603?

CVE-2026-25603 has been classified with a high severity due to the potential for remote code execution.

2

How do I fix CVE-2026-25603?

To fix CVE-2026-25603, it is recommended to apply the latest firmware updates from Linksys for the MR9600 and MX4200 models.

3

What systems are affected by CVE-2026-25603?

CVE-2026-25603 affects the Linksys MR9600 and Linksys MX4200 routers.

4

What types of attacks can be executed through CVE-2026-25603?

CVE-2026-25603 may allow attackers to execute arbitrary shell scripts due to improper limitation of pathname access.

5

Is CVE-2026-25603 easily exploitable?

Yes, due to its nature, CVE-2026-25603 can be easily exploited if proper safeguards are not in place.

Contact

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