Command Injection Vulnerability in GL-iNet GL-MT3000 Products
CVE-2026-18616

9.3CRITICAL

Key Information:

Vendor

Gl-inet

Status
Gl-mt3000
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18616?

A command injection vulnerability has been discovered in the GL-iNet GL-MT3000, specifically affecting versions up to 4.4.5. The issue arises from improper handling of the 'public_key' argument in the 'server.set_peer' function of the '/cgi-bin/glc' file within the 'wg-server.so' native plugin. This vulnerability allows an attacker to execute arbitrary commands remotely, posing a significant threat to device security. The potential for exploitation is enhanced by the availability of public exploit code, making it imperative for users to address the vulnerability promptly. GL-iNet has been informed of this flaw and has acknowledged its existence.

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-2026-18616 - Proof of Concept

References

https://vuldb.com/vuln/385536
vdb-entrytechnical-description
https://vuldb.com/vuln/385536/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18616
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
.