Default Telnet Password: Zmm220

When prompted for a login, try the root username followed by one of the passwords listed above. Other Important ZKTeco Default Passwords

After this, the default root / vizrt combination should work. zmm220 default telnet password

Malicious actors constantly scan the internet for devices using default credentials. Once they find a device accessible via Telnet, they attempt to log in using common username/password pairs. Successful breaches often result in the device being conscripted into a botnet (such as Mirai or Mozi), which can be used to launch massive Distributed Denial of Service (DDoS) attacks. When prompted for a login, try the root