CVE-2021-4470

CRITICAL

TG8 Firewall - Unauthenticated Remote Code Execution via runphpcmd.php syscmd Parameter

Title source: llm

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.

References (3)

Core 3

Core References

Various Sources technical-description exploit

https://ssd-disclosure.com/ssd-advisory-tg8-firewall-preauth-rce-and-password-disclosure/

Various Sources product

https://web.archive.org/web/20211024224240/http://www.tg8security.com/

Third Party Advisory third-party-advisory

https://www.vulncheck.com/advisories/tg8-firewall-unauthenticated-rce-via-runphpcmd-php

Scores

CVSS v4 9.3

EPSS 0.0092

EPSS Percentile 55.8%

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-78

Status published

Products (1)

TG8/TG8 Firewall

Published Nov 14, 2025

Tracked Since Feb 18, 2026