CVE-2026-9459 Edimax EW-7438RPn formConnectionSetting stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Edimax EW-7438RPn via crafted connection settings, potentially executing arbitrary code.
- 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-2026-9459?
CVE-2026-9459 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 security flaw has been discovered in Edimax EW-7438RPn 1.31. This affects the function formConnectionSetting of the file /goform/formConnectionSetting. Performing a manipulation of the argument max_Conn/timeOut results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-9459?
How do I fix CVE-2026-9459?
No fix has been published for CVE-2026-9459 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-2026-9459 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9459 exists.
Sources
Also known as GHSA-hwrg-8cjq-3gj6.