Quick answers
- Is CVE-2026-9463 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9463 being exploited in the wild.
- How severe is CVE-2026-9463?
- 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-2026-9463?
- 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-2026-9463 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9463?
- 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 exists in the 'formLicence' function within the '/goform/formLicence' component of the Edimax EW-7438RPn firmware version 1.31. The vulnerability is caused by a lack of bounds checking on the 'submit-url' POST parameter, which is copied directly into a local stack variable. A remote attacker with low privileges (authenticated) can exploit this by sending an overly long string in the 'submit-url' argument, allowing them to overwrite the return address on the stack. Successful exploitation can lead to arbitrary code execution or a persistent denial-of-service (device crash). As of the advisory date, the vendor has not responded to disclosure attempts.
Affected products
- Edimax EW-7438RPn 1.31
Timeline
- 2026-05-25: advisory: Initial disclosure and NVD publication
- 2026-05-25: disclosed: Public exploit code released on GitHub