CVE-2026-12807 Edimax BR-6478AC V2 POST Request setWAN command injection
Remote attackers can execute arbitrary commands on Edimax BR-6478AC V2 routers via the setWAN POST request handler.
- 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-2026-12807?
CVE-2026-12807 is a medium-severity command injection vulnerability in Edimax BR-6478AC V2, published on 21 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Edimax BR-6478AC V2 1.23. This affects the function setWAN of the file /goform/setWAN of the component POST Request Handler. The manipulation of the argument pppUserName/pptpUserName/L2TPUserName results in command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-12807?
How do I fix CVE-2026-12807?
No fix has been published for CVE-2026-12807 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-12807 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12807 exists.
Sources
Also known as GHSA-wj96-j9c9-gqpx.