Is CVE-2026-25603 actively exploited?

CVE-2026-25603 has no public evidence of in-the-wild exploitation as of 2026-02-26.

What is the CVSS score for CVE-2026-25603?

CVE-2026-25603 has a CVSS score of 6.6 (MEDIUM severity). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-25603?

Patch guidance is available from linksys security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-25603.

CVE-2026-25603 - remediation guidance & executive summary

Q: Which products are affected by CVE-2026-25603?

2 products: linksys mr9600 firmware, linksys mx4200 firmware.

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 Metrics

Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector: physical
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-22 · Path Traversal

Metadata

Primary Vendor: LINKSYS
Published: 2/24/2026
Last Modified: 2/26/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-25603

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary