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Vulnerabilities

Vulnerability · CVE-2026-25603

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Linksys MR9600, Linksys MX4200 allows that contents of a USB drive part…

Published Feb 24, 2026 · catalog updated Jun 17, 2026 · mr9600 firmware

Check if you run it

No confirmed exploitation is on record for CVE-2026-25603. EPSS is 0.30%. Act only if a listed version of mr9600 firmware is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Not established
Affected products
cpe linksys/mr9600 firmware · cpe linksys/mx4200 firmware

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linksys/mr9600 firmware1.0.4.205530
  • cpe linksys/mx4200 firmware1.0.4.205530

How to fix CVE-2026-25603

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-25603. EPSS is 0.30%. Act only if a listed version of mr9600 firmware is installed.

Which versions are affected?

Compare what you have installed with linksys/mr9600 firmware 1.0.4.205530; linksys/mx4200 firmware 1.0.4.205530. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 24, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-25603

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-25603

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-25603

    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 scrip

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.