CVE-2026-18614
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. Impacted is the function s2s.enable_echo_server of the file /cgi-bin/glc of the component s2s.so Native Plugin. Performing a manipulation of the argument port results in command injection. The attack may be initiated remotely. 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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-03
Last Modified
2026-08-03
Generated
2026-08-04
AI Q&A
2026-08-03
EPSS Evaluated
N/A
NVD
CVE-2026-18614
EUVD
EUVD-2026-52400

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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

AI Quick Actions

Instant insights powered by AI
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 s2s.so Native Plugin component, specifically in the /cgi-bin/glc file's s2s.enable_echo_server function. An attacker can manipulate the 'port' argument to inject and execute arbitrary commands remotely.

Detection Guidance

This vulnerability involves command injection via the port argument in the s2s.enable_echo_server function of GL-iNet GL-MT3000 devices running firmware up to 4.4.5. To detect it, check for unusual network traffic or processes involving the vulnerable CGI endpoint /cgi-bin/glc. Inspect logs for unexpected port values or shell commands executed remotely. No specific commands are provided in the context.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary commands on the affected device with high privileges. This could lead to full system compromise, unauthorized access, data theft, or disruption of network services. Since the exploit is public, attackers may already be using it.

Compliance Impact

This vulnerability allows remote command injection, which could lead to unauthorized access, data exfiltration, or system compromise. Such risks may violate compliance requirements under GDPR (data protection) and HIPAA (health data security) if exploited.

Mitigation Strategies

Immediately update GL-iNet GL-MT3000 to a version beyond 4.4.5 to patch the command injection vulnerability in the s2s.so Native Plugin. Disable remote access to the vulnerable /cgi-bin/glc endpoint if not required. Monitor network traffic for unusual activity targeting port manipulation.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-18614. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart