The vulnerability of the Zyxel ZLD operating system allows a remote attacker to escalate their privileges.

Exploiting a vulnerability in the operating system of the Zyxel ZyWALL USG 300 network interface card allows a malicious actor to upload and download device configuration files without additional authentication. As a result, the malicious actor can view or modify the administrator’s password...

The vulnerability of the Zyxel ZLD operating system allows a remote attacker to intercept network traffic.

The Zyxel ZyWALL USG 300 network interface card/mesh router does not perform ARP packet authentication for packets transmitted over the IPv4 protocol. This allows for intercepting traffic processed by this router through ARP spoofing attacks...