CVE-2026-9427 Edimax EW-7438RPn webs formWlSiteSurvey stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Edimax EW-7438RPn web interface, potentially leading to code execution or device crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9427?
CVE-2026-9427 is a high-severity memory corruption vulnerability in Edimax EW-7438RPn, published on 25 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in Edimax EW-7438RPn 1.31. This impacts the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component webs. This manipulation of the argument selSSID/submit-url causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-9427?
How do I fix CVE-2026-9427?
No fix has been published for CVE-2026-9427 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-9427 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9427 exists.
Sources
Also known as GHSA-wv7w-gprg-vf9f.