Command Injection in GL-iNet GL-MT3000's Native Plugin
CVE-2026-18614

9.3CRITICAL

Key Information:

Vendor

Gl-inet

Status
Gl-mt3000
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18614?

A command injection vulnerability exists in the GL-iNet GL-MT3000's s2s.so Native Plugin, specifically in the s2s.enable_echo_server function. This vulnerability allows attackers to manipulate the 'port' argument, enabling remote code execution through crafted input. The risk is heightened as the exploit has been publicly disclosed, granting potential attackers access to execute arbitrary commands without authentication. The vendor has acknowledged the issue following early notifications regarding the security flaw.

Affected Version(s)

GL-MT3000 4.4.0

GL-MT3000 4.4.1

GL-MT3000 4.4.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18614 - Proof of Concept

References

https://vuldb.com/vuln/385534
vdb-entrytechnical-description
https://vuldb.com/vuln/385534/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18614
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

strforexc (VulDB User)
VulDB CNA Team
.