GL.iNet MT3000 OpenVPN Client Import Workflow ovpnclient.sh command injection
CVE-2026-11406

5.3MEDIUM

Key Information:

Vendor

Gl.inet

Status
Mt3000
Vendor
CVE Published:
6 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11406?

A vulnerability was determined in GL.iNet MT3000 up to 4.4.5. This vulnerability affects unknown code of the file ovpnclient.sh of the component OpenVPN Client Import Workflow. This manipulation causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. Upgrading to version 4.9.0_beta3-1012-0513-1778656146 is able to resolve this issue. You should upgrade the affected component. The vendor confirms: "This issue has been addressed by implementing malicious checks on OpenVPN configuration files to prevent command injection attacks carried through malicious configuration files."

Affected Version(s)

MT3000 4.4.0

MT3000 4.4.1

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-2026-11406 - Proof of Concept

References

https://vuldb.com/vuln/368966
vdb-entry
https://vuldb.com/vuln/368966/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-11406
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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
.