Command Injection Vulnerability in Mesh Network Device Configuration Tools by a Major Vendor
CVE-2026-27849

9.8CRITICAL

Key Information:

Vendor

Linksys
Status
Mr9600
Mx4200
Vendor
CVE Published:
25 February 2026

What is CVE-2026-27849?

A command injection vulnerability exists in the update functionality of the TLS-SRP connection used for configuring devices in a mesh network. Due to inadequate neutralization of special elements, it allows attackers to inject OS commands. This could potentially compromise the affected devices, specifically the MR9600 and MX4200, which utilize the mentioned versions. Proper mitigation and timely updates are essential to safeguard against potential exploitation.

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Affected Version(s)

MR9600 1.0.4.205530

MX4200 1.0.13.210200

References

https://www.syss.de/fileadmin/dokumente/Publikationen/Adv...
third-party-advisorytechnical-description

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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