CVE-2026-27846

Missing authentication in Linksys MR9600, Linksys MX4200

MEDIUM
6.2
CVSS Score
Published: February 25, 2026 at 03:03 PM UTC
Updated: June 17, 2026 at 10:27 AM UTC
2 products affected across 1 vendorMR9600MX4200

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Severity
MEDIUM6.2
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party AdvisoryTechnical Description
Source: cverecord
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-002.txt

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.2MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306

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