Quick answers
- Is CVE-2026-9348 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9348 being exploited in the wild.
- How severe is CVE-2026-9348?
- High severity, with a CVSS score of 8.8, published 24 May 2026.
- Which products and versions are affected?
- Edimax EW-7438RPn 1.31.
- Is there a fix for CVE-2026-9348?
- 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-2026-9348 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9348?
- 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 'webs' binary of the Edimax EW-7438RPn extender (firmware 1.31). The issue resides in the 'mp' function, where the 'command' POST parameter is copied into a local stack variable without adequate bounds checking. An attacker with network access and low-level authentication can exploit this by sending an overly long string in the 'command' argument to the /goform/mp endpoint. Successful exploitation can lead to a denial of service (device crash) or arbitrary code execution by overwriting the function's return address. A public exploit (PoC) is available, and the vendor has reportedly not responded to disclosure attempts.
Affected products
- Edimax EW-7438RPn 1.31
Timeline
- 2026-05-24: advisory: Initial disclosure by VulDB and NVD
- 2026-05-24: disclosed: Public PoC released on GitHub