CVE-2026-105284
Received Received - Intake

Improper Authorization in Totolink A3002MU Firmware

Publication date: 2026-10-05

Last updated on: 2026-10-05

Assigner: VulDB

Description
A weakness has been identified in Totolink A3002MU 1.0.0-B20230403.1455. The impacted element is the function sub_40FCFC of the file /bin/boa of the component Authentication Check. Executing a manipulation can lead to improper authorization. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

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Meta Information

Published
2026-10-05
Last Modified
2026-10-05
Generated
2026-10-05
AI Q&A
2026-10-05
EPSS Evaluated
N/A
NVD
CVE-2026-105284
EUVD
EUVD-2026-92331

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
totolink a3002mu 1.0.0-b20230403.1455

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-266 A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
CWE-285 The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

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Executive Summary

This vulnerability is an authentication bypass flaw in the Totolink A3002MU router version 1.0.0-B20230403.1455. It allows unauthenticated users to gain full administrative access to the device by exploiting a weak session validation mechanism in the web server component (bin/boa). The issue occurs because the session token buffer is empty for all clients except the currently logged-in user, causing the authentication gate function to permit access without proper credentials.

Detection Guidance

Check if your Totolink A3002MU router is running firmware version 1.0.0-B20230403.1455 or earlier. Test for unauthenticated access by sending HTTP requests to the router's web interface without providing credentials. Look for responses that indicate successful access to administrative functions or configuration pages.

Impact Analysis

This vulnerability allows attackers on the same network or with access to the management interface to remotely execute administrative commands without authentication. This includes changing network settings, disabling security features, installing malicious firmware, or accessing sensitive data. The impact includes full device compromise, potential network breaches, and further exploitation of other vulnerabilities.

Compliance Impact

This vulnerability can lead to unauthorized access to sensitive data, violating privacy and security requirements under GDPR and HIPAA. Organizations using affected Totolink devices may face compliance failures due to inadequate access controls, potential data breaches, and inability to ensure data confidentiality and integrity.

Mitigation Strategies

Immediately update the router's firmware to the latest version provided by Totolink. If no update is available, consider replacing the device with a supported model. Disable remote management features if enabled. Monitor network traffic for unusual administrative access attempts.

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