Zyxel fixed multiple vulnerabilities reported by our research team on February 20th, including CVE-2023-6764, a WAN side Pre-Auth RCE in the IPSec VPN service.
Update your Zyxel Firewall and AP ASAP.
zyxel.com/global/en/support/…
Demo video out for Zyxel VPN Pre-Auth RCE (CVE-2023-28771)
No extra config or web access needed, exploitable via WAN.
More details will be released, patch your device ASAP.
youtu.be/R68QJIRSwU0