CVE-2026-7684 Edimax BR-6428nC setWAN buffer overflow
Remote attackers can trigger a buffer overflow in the Edimax BR-6428nC router via the setWAN interface, potentially leading to code execution or service disruption.
- 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-2026-7684?
CVE-2026-7684 is a high-severity memory corruption vulnerability in Edimax BR-6428nC, published on 3 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in Edimax BR-6428nC up to 1.16. This impacts an unknown function of the file /goform/setWAN. Such manipulation of the argument pptpDfGateway leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly 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-2026-7684?
How do I fix CVE-2026-7684?
No fix has been published for CVE-2026-7684 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-2026-7684 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7684 exists.
Sources
Also known as GHSA-fwq2-3mp4-crxg.