CVE-2026-9480 Edimax EW-7438RPn formrefresh stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the formrefresh function of Edimax EW-7438RPn devices, potentially leading to arbitrary code execution.
- 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-2026-9480?
CVE-2026-9480 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 vulnerability was detected in Edimax EW-7438RPn 1.31. The impacted element is the function formrefresh of the file /goform/formrefresh. The manipulation of the argument submit-url results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public 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-2026-9480?
How do I fix CVE-2026-9480?
No fix has been published for CVE-2026-9480 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-2026-9480 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9480 exists.
Sources
Also known as GHSA-3h8q-f835-m698.