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CVE-2021-4470

Estado: AplazadaCrítica (9.3)—

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

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS AV:N sin autenticación (PR:N) y UI:N indica exposición remota sin privilegios previos (T1190). El endpoint runphpcmd.php permite ejecución de comandos OS arbitrarios vía parámetro sin validación (T1059) con privilegios root (T1068).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability Scanning

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

TG8 — FirewallAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-4470",
  "cveTags": [
    {
      "tags": [
        "unsupported-when-assigned"
      ],
      "sourceIdentifier": "disclosure@vulncheck.com"
    }
  ],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-4470",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-11-18T16:20:27.861715Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 9.3,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "vendor": "TG8",
          "product": "TG8 Firewall",
          "versions": [
            {
              "status": "affected",
              "version": "0"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2025-11-14T23:15:43.087",
  "references": [
    {
      "url": "https://ssd-disclosure.com/ssd-advisory-tg8-firewall-preauth-rce-and-password-disclosure/",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://web.archive.org/web/20211024224240/http://www.tg8security.com/",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/tg8-firewall-unauthenticated-rce-via-runphpcmd-php",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://ssd-disclosure.com/ssd-advisory-tg8-firewall-preauth-rce-and-password-disclosure/",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "lastModified": "2026-06-17T04:19:49.540",
  "sourceIdentifier": "disclosure@vulncheck.com"
}