Quick answers
- Is CVE-2026-9462 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9462 being exploited in the wild.
- How severe is CVE-2026-9462?
- High severity, with a CVSS score of 8.8, published 25 May 2026.
- Which products and versions are affected?
- Edimax EW-7438RPn 1.31.
- Is there a fix for CVE-2026-9462?
- 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-2026-9462 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9462?
- 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
A stack-based buffer overflow vulnerability exists in the 'formWpsProxyEnable' function within the '/goform/formWpsProxyEnable' endpoint of the Edimax EW-7438RPn (firmware version 1.31). The issue stems from the 'webs' binary failing to validate the length of the 'submit-url' (and 'wlan-url') parameter before copying it into a fixed-size local stack buffer. An attacker with network access to the web management interface can exploit this by sending an oversized string in a POST request, overwriting the function's return address. This can result in a persistent denial of service (device crash) or remote code execution. Although the CVSS vector indicates low privileges are required, the exploit is public and the vendor has not responded to disclosure attempts.
Affected products
- Edimax EW-7438RPn 1.31
Timeline
- 2026-05-25: advisory: Vulnerability disclosed via VulDB and NVD
- 2026-05-25: disclosed: Public exploit code released on GitHub