CVE-2026-9294 Edimax BR-6428NS POST Request formWanTcpipSetup buffer overflow
Remote attackers can trigger a buffer overflow in the Edimax BR-6428NS router via a crafted POST request, potentially leading to 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-2026-9294?
CVE-2026-9294 is a high-severity memory corruption vulnerability in Edimax BR-6428NS, published on 23 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in Edimax BR-6428NS 1.10. The impacted element is the function formWanTcpipSetup of the file /goform/formWanTcpipSetup of the component POST Request Handler. Such manipulation of the argument pppUserName leads to buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-9294?
How do I fix CVE-2026-9294?
No fix has been published for CVE-2026-9294 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-2026-9294 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9294 exists.
Sources
Also known as GHSA-w59p-45j6-4rch.