CVE-2026-18601
Received Received - Intake

Command Injection in GL.iNet GL-MT3000

Publication date: 2026-08-03

Last updated on: 2026-08-03

Assigner: VulDB

Description
A vulnerability was found in GL.iNet GL-MT3000 up to 4.4.5. This impacts the function ovpn-client.check_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. Performing a manipulation of the argument filename results in command injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

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Meta Information

Published
2026-08-03
Last Modified
2026-08-03
Generated
2026-08-03
AI Q&A
2026-08-03
EPSS Evaluated
N/A
NVD
CVE-2026-18601
EUVD
EUVD-2026-52271

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gl.inet gl-mt3000 to 4.4.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

This vulnerability is a command injection flaw in the GL.iNet GL-MT3000 router firmware up to version 4.4.5. It exists in the ovpn-client.check_config function within the /cgi-bin/glc file of the ovpn-client.so Native Plugin. An attacker can exploit this by manipulating the filename argument to inject and execute arbitrary commands on the device remotely.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary commands on your GL.iNet GL-MT3000 router. This could lead to full system compromise, unauthorized access, data theft, or turning the device into a botnet node. Since the exploit is public, attackers could actively target unpatched devices.

Compliance Impact

This vulnerability allows remote command injection due to improper input validation in the ovpn-client.check_config function. Such unauthorized access could lead to data breaches, unauthorized data access, or modification, which are critical violations under GDPR and HIPAA. Compliance with these regulations requires robust security controls to prevent unauthorized access and data exposure.

Mitigation Strategies

Immediately update GL.iNet GL-MT3000 to a version beyond 4.4.5 to address the command injection vulnerability in the ovpn-client.check_config function.

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