---
cve: "CVE-2018-14558"
severity: "CRITICAL"
cvss: 9.8
epss: "8.7%"
vendor: "n/a"
kev: true
exploited: true
published: "2018-10-30 18:29:00"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-23T00:11:37+02:00"
---

# CVE-2018-14558

> 9.8 CRITICAL · ⚠️ CISA KEV (1814 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.

## CNA-Record (Kanon, cvelistV5)

- CNA: **mitre**
- State: PUBLISHED
- Stand: 2025-10-21 23:45:47

## CISA-Anreicherung (vulnrichment/ADP)

- CISA KEV seit: **03.11.2021**
- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **active**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-78** — Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

## Angriffsmuster (CAPEC)

- [CAPEC-6 — Argument Injection](https://capec.mitre.org/data/definitions/6.html) _(Severity: High)_
- [CAPEC-15 — Command Delimiters](https://capec.mitre.org/data/definitions/15.html) _(Severity: High)_
- [CAPEC-43 — Exploiting Multiple Input Interpretation Layers](https://capec.mitre.org/data/definitions/43.html) _(Severity: High)_
- [CAPEC-88 — OS Command Injection](https://capec.mitre.org/data/definitions/88.html) _(Severity: High)_
- [CAPEC-108 — Command Line Execution through SQL Injection](https://capec.mitre.org/data/definitions/108.html) _(Severity: Very High)_

## Referenzen

- <https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14558>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2018-14558/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_