CVE-2026-9442 Edimax BR-6478AC POST Request formiNICSiteSurvey buffer overflow
Remote attackers can trigger a buffer overflow in the Edimax BR-6478AC router via a crafted POST request, 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-2026-9442?
CVE-2026-9442 is a high-severity memory corruption vulnerability in Edimax BR-6478AC, published on 25 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A weakness has been identified in Edimax BR-6478AC 1.23. This affects the function formiNICSiteSurvey of the file /goform/formiNICSiteSurvey of the component POST Request Handler. Executing a manipulation of the argument selSSID can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could 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-2026-9442?
How do I fix CVE-2026-9442?
No fix has been published for CVE-2026-9442 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-2026-9442 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9442 exists.
Sources
Also known as GHSA-vrwj-7pfm-fv87.