CVE-2026-9347: Edimax EW-7438RPn OS command injection in formWizSurvey

CVE-2026-9347 · Severity: medium · CVSS 6.3 · Published 2026-05-24

A vulnerability exists in the Edimax EW-7438RPn Wi-Fi extender that allows an attacker to take control of the device. By sending a specially crafted request to the device's web management interface, an attacker can execute unauthorized system commands. This could lead to a complete compromise of the device, allowing an attacker to intercept network traffic or use the device as a foothold for further attacks on the local network.

Technologies: Edimax EW-7438RPn. Vendors: Edimax.

Quick answers

Is CVE-2026-9347 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-9347 being exploited in the wild.
How severe is CVE-2026-9347?
Medium severity, with a CVSS score of 6.3, published 24 May 2026.
Which products and versions are affected?
Edimax EW-7438RPn up to 1.31.
Is there a fix for CVE-2026-9347?
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-2026-9347 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9347?
Check whether you run Edimax EW-7438RPn 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

An OS command injection vulnerability exists in the 'webs' binary of Edimax EW-7438RPn firmware up to version 1.31. The vulnerability is located within the 'formWizSurvey' function in the '/goform/formWizSurvey' endpoint. The application fails to properly sanitize the 'ip', 'mask', and 'gateway' POST parameters before passing them to a system shell. A remote attacker with low privileges (authenticated access) can exploit this by submitting backticked commands or shell metacharacters in these fields to achieve arbitrary code execution. As of the advisory date, the vendor has not responded to disclosure attempts and no patch is available.

Affected products

  • Edimax EW-7438RPn up to 1.31

Timeline

  • 2026-05-24: disclosed: Public disclosure of the vulnerability and PoC
  • 2026-05-24: advisory: NVD publication date

References

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