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.

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History

Fri, 30 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Tenda
Tenda w18e
Vendors & Products Tenda
Tenda w18e

Fri, 30 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20

Fri, 30 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}


Fri, 30 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-78

Fri, 30 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title CVE-2026-118238
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cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published:

Updated: 2026-10-30T17:07:06.917Z

Reserved: 2026-10-27T19:49:03.088Z

Link: CVE-2026-118238

cve-icon Vulnrichment

Updated: 2026-10-30T17:06:56.775Z

cve-icon NVD

Status : Deferred

Published: 2026-10-30T16:17:41.993

Modified: 2026-10-30T17:17:15.473

Link: CVE-2026-118238

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T19:30:10Z

Weaknesses