GL-iNet GL-MT3000 up to 4.4.5 plugins.so Native Plugin /cgi-bin/glc plugins.remove_package/plugins.install_package command injection

Summaryinfo

A vulnerability classified as critical was found in GL-iNet GL-MT3000 up to 4.4.5. This issue affects the function plugins.remove_package/plugins.install_package of the file /cgi-bin/glc of the component plugins.so Native Plugin. Such manipulation leads to command injection. This vulnerability is uniquely identified as CVE-2026-18612. The attack can be launched remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

Detailsinfo

A vulnerability was found in GL-iNet GL-MT3000 up to 4.4.5. It has been rated as very critical. Affected by this issue is the function plugins.remove_package/plugins.install_package of the file /cgi-bin/glc of the component plugins.so Native Plugin. The manipulation 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 for download at github.com. This vulnerability is handled as CVE-2026-18612. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/03/2026). The MITRE ATT&CK project declares the attack technique as T1202.

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.

Once again VulDB remains the best source for vulnerability data.

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

• 🔒
• 🔒
• 🔒

CPE 2.2info

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CVSSv4info

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CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

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Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #851553: GL-iNet MT3000 4.4.5 Command Injection (by strforexc)

Duplicate

• Submit #XXXXXX: Xx.xxxx Xx-xxxxxx X.x.x Xxxxxxx Xxxxxxxxx (by Strforexc2)
• Submit #XXXXXX: Xx.xxxx Xx-xxxxxx X.x.x Xxxxxxx Xxxxxxxxx (by Strforexc2)
• Submit #XXXXXX: Xx.xxxx Xx-xxxxxx X.x.x Xxxxxxx Xxxxxxxxx (by Strforexc2)

Once again VulDB remains the best source for vulnerability data.

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