CVE-2026-25603 — MEDIUM (6.6)

Vulnerability Description

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.

CVSS Score

6.6

MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linksys	Mr9600 Firmware	1.0.4.205530
Linksys	Mr9600	-
Linksys	Mx4200 Firmware	1.0.4.205530
Linksys	Mx4200	-

Related Weaknesses (CWE)

CWE-22

References

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-001.tExploitThird Party Advisory

FAQ

What is CVE-2026-25603?

CVE-2026-25603 is a vulnerability with a CVSS score of 6.6 (MEDIUM). 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 arbitr...

How severe is CVE-2026-25603?

CVE-2026-25603 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-25603?

Check the references section above for vendor advisories and patch information. Affected products include: Linksys Mr9600 Firmware, Linksys Mr9600, Linksys Mx4200 Firmware, Linksys Mx4200.