Vulnerability · Published Nov 14, 2025 · Assigned by VulnCheck

CVE-2021-4470TG8 Firewall Unauthenticated RCE via runphpcmd.php

Critical 9.3

In plain English

A critical-severity OS command injection in TG8 Firewall from TG8. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)0.8%top 42.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
TG8	TG8 Firewall	0

Weakness: CWE-78 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://ssd-disclosure.com/ssd-advisory-tg8-firewall-preauth-rce-and-password-disclosure/ technical-description, exploit
https://web.archive.org/web/20211024224240/http://www.tg8security.com/ product
https://www.vulncheck.com/advisories/tg8-firewall-unauthenticated-rce-via-runphpcmd-php third-party-advisory