Medium severity · published Feb 24, 2026
CVE-2026-25603
Path Traversal vulnerability in Linksys MR9600, Linksys MX4200
6.6
CVSS
0.3%
EPSS
No
On KEV
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 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 interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MR
MR9600 · Linksys
1.0.4.205530 · source: vendor
MX
MX4200 · Linksys
1.0.13.210200 · source: vendor
MF
Mr9600 Firmware · Linksys
1.0.4.205530 · source: NVD
MF
Mx4200 Firmware · Linksys
1.0.4.205530 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25603
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25603
Exploit
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-001.txt
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