GL.iNet GL-MT3000 up to 4.4.5 ovpn-client.so Native Plugin /cgi-bin/glc ovpn-client.get_recommend_config Hostname command injection

Summaryinfo

A vulnerability classified as critical has been found in GL.iNet GL-MT3000 up to 4.4.5. Affected by this vulnerability is the function ovpn-client.get_recommend_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. The manipulation of the argument Hostname leads to command injection. This vulnerability is uniquely identified as CVE-2026-18602. The attack is possible to be carried out remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in GL.iNet GL-MT3000 up to 4.4.5. This issue affects the function ovpn-client.get_recommend_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. The manipulation of the argument hostname with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-18602. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/03/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• GL.iNet

Name

• GL-MT3000

Version

• 4.4.0
• 4.4.1
• 4.4.2
• 4.4.3
• 4.4.4
• 4.4.5

CPE 2.3info

• 🔒
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CPE 2.2info

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Threat Intelligenceinfo

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Submitinfo

Accepted

• Submit #851542: GL-iNet GL-MT3000 4.4.5 Command Injection (by strforexc)

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