CVE-2021-4470
CRITICAL EPSS 55.8%
Published Nov 14, 20257mo ago · Modified Jun 17, 20262w ago
9.3 CVSS 4.0
Published Nov 14, 2025 7mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
55.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-78 OS Command Injection Injection
References 3
- ssd-disclosure.com https://ssd-disclosure.com/ssd-advisory-tg8-firewall-preauth-rce-and-password-disclosure/
- web.archive.org https://web.archive.org/web/20211024224240/http://www.tg8security.com/
- vulncheck.com https://www.vulncheck.com/advisories/tg8-firewall-unauthenticated-rce-via-runphpcmd-php
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.