CVE-2026-8776 Edimax BR-6428NS POST Request formPPTPSetup buffer overflow
Remote attackers can trigger a buffer overflow in the PPTP setup handler of Edimax BR-6428NS routers, 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-2026-8776?
CVE-2026-8776 is a high-severity memory corruption vulnerability in Edimax BR-6428NS, published on 18 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Edimax BR-6428NS 1.10. This vulnerability affects the function formPPTPSetup of the file /goform/formPPTPSetup of the component POST Request Handler. Such manipulation of the argument pptpUserName leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the 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-2026-8776?
How do I fix CVE-2026-8776?
No fix has been published for CVE-2026-8776 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-2026-8776 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8776 exists.
Sources
Also known as GHSA-cc9m-6hq9-85vh.