---
cve: "CVE-2021-4470"
severity: "CRITICAL"
cvss: 9.3
epss: "1%"
vendor: "TG8"
kev: false
exploited: false
published: "2025-11-14 23:15:43"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-09T13:26:53+02:00"
---

# CVE-2021-4470

> 9.3 CRITICAL

## Beschreibung

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.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://ssd-disclosure.com/ssd-advisory-tg8-firewall-preauth-rce-and-password-disclosure/>
- <https://web.archive.org/web/20211024224240/http://www.tg8security.com/>
- <https://www.vulncheck.com/advisories/tg8-firewall-unauthenticated-rce-via-runphpcmd-php>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2021-4470/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_