Authentication Bypass in MR9600 and MX4200 Products by Vendor
CVE-2026-27846

6.2MEDIUM

Key Information:

Vendor

Linksys
Status
Mr9600
Mx4200
Vendor
CVE Published:
25 February 2026

What is CVE-2026-27846?

An authentication bypass vulnerability exists in certain models of mesh network devices, allowing users with physical access to exploit the mesh functionality. By doing so, they can introduce new devices to the network, which leads to unauthorized access to sensitive information. This includes critical data such as admin interface passwords and Wi-Fi passwords, posing a significant risk to network security.

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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:
6.2
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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