Undocumented Account with Unchangeable Password in Zyxel USG Firmware v4.60

CVE-2020-29583

Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges.

Learn more about our Web App Pen Testing.