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Authentication Bypass vulnerability in Linksys Router 

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: HIGH

Systems Affected

Linksys E9450-SG version 1.2.00.052

Overview

A vulnerability has been reported in Linksys Router, which could allow an attacker to access certain administration functions without login credentials.

Target Audience:

End-users/ Administrators of Linksys Router.

Risk Assessment:

Unrestricted access to sensitive system files and configuration files on the targeted device.

Impact Assessment:

Impact on confidentiality, integrity and availability of the vulnerable device.

Description

A Linksys router is a networking device from the Linksys brand that connects your home to the internet and creates a private Wi-Fi network, allowing multiple devices (phones, PCs, smart TVs) to share that connection wirelessly or via Ethernet.

This vulnerability exists in the Linksys Router due to Missing Authentication for Critical Function. A remote attacker could exploit this vulnerability by sending specially crafted URL to access certain administration functions without login credentials.

Solution

Apply appropriate updates as mentioned by vendor

Vendor Information

Linksys

https://www.linksys.com/

References

 

https://medium.com/csit-tech-blog/cve-2025-52692-discovery-and-exploitation-of-zero-day-vulnerability-in-linksys-e9450-sg-router-cda5c829bbf9

CVE Name

CVE-2025-52692

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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