TG8 Firewall runphpcmd.php syscmd os command injection

Summaryinfo

A vulnerability labeled as critical has been found in TG8 Firewall. This affects an unknown function of the file runphpcmd.php. The manipulation of the argument syscmd results in os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability was named CVE-2021-4470. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in TG8 Firewall (the affected version unknown). It has been classified as very critical. Affected is an unknown part of the file runphpcmd.php. The manipulation of the argument syscmd with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

TG8 Firewall contains a pre-authentication remote code execution vulnerability in the runphpcmd.php endpoint. The syscmd POST parameter is passed directly to a system command without validation and executed with root privileges. A remote, unauthenticated attacker can supply crafted values to execute arbitrary operating system commands as root, resulting in full device compromise.

The advisory is available at ssd-disclosure.com. This vulnerability is traded as CVE-2021-4470 since 11/14/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/16/2025). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

By approaching the search of inurl:runphpcmd.php it is possible to find vulnerable targets with Google Hacking.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2021-34721). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Firewall Software

Vendor

• TG8

Name

• Firewall

Support

• end of life

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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