---
id: CVE-2026-118238
title: CVE-2026-118238
summary: >-
  The Tenda W18E web management server is vulnerable to OS command injection via
  the "diagnose" packet-capture feature due to improper validation of JSON
  fields. An authenticated user can inject shell metacharacters into the
  protocol or ta…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cvssSource: adp
cwe:
  - CWE-78
vendor: Tenda
product: W18E
affected:
  - W18E V16.01.0.20
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-30T17:07:03.133377Z'
exploitAvailable: true
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T17:07:06.917Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118238'
references:
  - url: >-
      https://cushz.github.io/en/exploit-development/2026/10/27/hacking-routers-for-fun-and-not-profit.html
tags:
  - cve.org
  - exploit-available
epss: 0.01535
epssPercentile: 0.74901
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/Cushz/CVE-2026-118238'
  checkedAt: '2026-11-05T16:25:07.449Z'
ingestedAt: '2026-11-05T16:24:31.125Z'
---

## Overview

The Tenda W18E web management server is vulnerable to OS command injection via the "diagnose" packet-capture feature due to improper validation of JSON fields. An authenticated user can inject shell metacharacters into the protocol or targetDevice fields, which are later concatenated into a tcpdump command and executed with root privileges. This vulnerability can be exploited without authentication if the device is in a factory-reset state.

## Affected

- `W18E V16.01.0.20`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.