CVE-2026-36608 Security feature bypass in n/a
An unauthenticated LAN attacker can expose the router's admin panel to the internet via UPnP, bypassing network isolation and enabling remote administrative access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-36608?
CVE-2026-36608 is a high-severity vulnerability in n/a, published on 3 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 allows UPnP AddPortMapping to forward external ports to the router's own admin interface by accepting its own IP (192.168.1.1) or localhost (127.0.0.1) as InternalClient. An unauthenticated LAN attacker can expose the admin panel to the internet with a single SOAP request.
Weakness: CWE-441
Which versions are affected by CVE-2026-36608?
How do I fix CVE-2026-36608?
No fix has been published for CVE-2026-36608 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-36608 being exploited?
There is no known exploitation of CVE-2026-36608 in the wild and no public exploit code.
Sources
Also known as GHSA-2q23-65hh-rjx9.