Is CVE-2026-118238 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-118238 being exploited in the wild.

How severe is CVE-2026-118238?

Informational severity, published 30 October 2026.

Which products and versions are affected?

Tenda W18E v16.01.0.20 (4766) and likely others.

Is there a fix for CVE-2026-118238?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-118238 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-118238?

Check whether you run Tenda W18E at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-118238: Tenda W18E command injection in web management diagnose feature

CVE-2026-118238 · Severity: info · Published 2026-10-30

The Tenda W18E is a wireless router whose web management interface contains a packet-capture diagnostic tool vulnerable to OS command injection. An attacker can inject shell commands through JSON input fields, which are executed with root privileges on the router. Devices in factory-reset state can be exploited without authentication, potentially allowing an attacker to take over the router and access or modify network traffic.

Vendors: Tenda.

Quick answers

Is CVE-2026-118238 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-118238 being exploited in the wild.
How severe is CVE-2026-118238?: Informational severity, published 30 October 2026.
Which products and versions are affected?: Tenda W18E v16.01.0.20 (4766) and likely others.
Is there a fix for CVE-2026-118238?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-118238 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-118238?: Check whether you run Tenda W18E at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an OS command injection in the web server's diagnostic packet-capture feature due to insufficient validation of JSON protocol and targetDevice fields. These fields are concatenated into a tcpdump command and executed via system() with root privileges. An authenticated user can exploit this, or any user if the device is in factory-reset state with default credentials enabled.

Affected products

Tenda W18E v16.01.0.20 (4766) and likely others

Timeline

2026-10-27: disclosed: Technical write-up published
2026-10-30: advisory

References

https://cushz.github.io/en/exploit-development/2026/10/27/hacking-routers-for-fun-and-not-profit.html

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