Quick answers
- Is CVE-2026-9424 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9424 being exploited in the wild.
- How severe is CVE-2026-9424?
- Medium severity, with a CVSS score of 6.3, published 25 May 2026.
- Which products and versions are affected?
- Edimax EW-7438RPn 1.31.
- Is there a fix for CVE-2026-9424?
- 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-2026-9424 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9424?
- 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 Edimax EW-7438RPn firmware version 1.31 within the 'webs' binary. The root cause is the improper neutralization of special elements in the 'formWlanMP' function located at '/goform/formWlanMP'. Multiple parameters, including 'ateFunc', 'ateGain', and 'ateChan', are passed directly to the system shell without sufficient validation. A remote attacker with low privileges (authenticated) can exploit this by sending a crafted POST request containing shell metacharacters (e.g., backticks) to execute arbitrary OS commands. A public proof-of-concept demonstrates using this flaw to start a telnet daemon for remote shell access. No patch is currently available as the vendor did not respond to the disclosure.
Affected products
- Edimax EW-7438RPn 1.31
Timeline
- 2026-05-25: advisory: NVD publication date
- 2026-05-25: disclosed: Public disclosure of the vulnerability and PoC