Command Injection Vulnerability in GL.iNet GL-MT3000 Router
CVE-2026-18684

9.3CRITICAL

Key Information:

Vendor

Gl.inet

Status
Gl-mt3000
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18684?

A security weakness has been discovered in the GL.iNet GL-MT3000 router affecting versions up to 4.4.5. This vulnerability resides in the 'remove_profile' function within the '/cgi-bin/glc' component of the modem.so file. Through this flaw, attackers can perform command injection remotely, potentially compromising the device. The exploit has been publicly disclosed, highlighting the urgency for users to take action and secure their devices against potential threats.

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-2026-18684 - Proof of Concept

References

https://vuldb.com/vuln/385610
vdb-entrytechnical-description
https://vuldb.com/vuln/385610/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18684
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

Strforexc2 (VulDB User)
VulDB CNA Team
.