CVE-2026-27846

MEDIUM

Linksys MR9600 1.0.4.205530 and MX4200 1.0.13.210200 - Unauthenticated Information Disclosure via Mesh Device Addition

Title source: llm

Description

Due to missing authentication, a user with physical access to the device can misuse the mesh functionality for adding a new mesh device to the network to gain access to sensitive information, including the password for admin access to the web interface and the Wi-Fi passwords.This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

References (1)

Core 1

Core References

Various Sources third-party-advisory technical-description

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-002.txt

Scores

CVSS v3 6.2

EPSS 0.0014

EPSS Percentile 3.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-306

Status published

Products (2)

Linksys/MR9600 1.0.4.205530

Linksys/MX4200 1.0.13.210200

Published Feb 25, 2026

Tracked Since Feb 25, 2026