Command Injection Vulnerability in GL.iNet GL-MT3000 Router
CVE-2026-18599

8.6HIGH

Key Information:

Vendor

Gl.inet

Status
Gl-mt3000
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18599?

A command injection vulnerability has been identified in the GL.iNet GL-MT3000 router, specifically affecting version 4.4.5. This flaw resides within the Logread Lua RPC Plugin, particularly in the logread.set_config function. An attacker can manipulate the record_size argument in a way that allows the execution of arbitrary commands on the device. The vulnerability has been acknowledged by the vendor, and proof-of-concept exploits have surfaced, emphasizing the need for immediate attention and mitigation strategies.

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-2026-18599 - Proof of Concept

References

https://vuldb.com/vuln/385514
vdb-entrytechnical-description
https://vuldb.com/vuln/385514/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18599
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent 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
.