CVE-2021-4470

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 v4.0

9.3 CRITICALCVSS: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

EPSS

1.01% chance of exploitation in the next 30 days, 61th percentile

Published

2025-11-14

Updated

2025-11-18

Proof-of-concept exploits (1)

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

References

• CVE Record
• NVD entry

Related

• CVE-2021-4469
• CVE-2021-4471
• CVE-2021-44686
• CVE-2021-4473
• CVE-2021-44685
• CVE-2021-44731