Immediately change the password using the passwd command after logging in via Telnet.
The default Telnet login credentials for ZKTeco hardware built on the typically use the username root , combined with vendor-specific backdoor passwords such as colorkey , solokey , or swsbzkgn .
Unlike standard routers or switches, the ZMM220 platform like admin or password for its Telnet root account. Instead, the default username is always: Username: root zmm220 default telnet password
If successful, you will be greeted by a Linux shell prompt, typically displaying ~ # or [root@ZMM220 /]# . Critical Security Risks of Default Credentials
If your firmware allows terminal access modifications, overwrite the default hardcoded manufacturer strings with strong, randomized passwords. Immediately change the password using the passwd command
When establishing a remote terminal connection to a ZMM220 device, the login interface typically prompts you with a Linux kernel banner (e.g., Welcome to Linux (ZMM220) for MIPS Kernel 3.0.8 ). Security researchers and network administrators have compiled several credential profiles that work out of the box across various firmware versions: root | Password: colorkey Username: root | Password: solokey Username: root | Password: swsbzkgn Username: admin | Password: admin Username: manage | Password: 888
The is a widely used core development platform (motherboard) for ZKTeco’s biometric time attendance and access control terminals. Because these devices often run a customized Linux-based firmware, they frequently have Telnet enabled for debugging or remote management. Instead, the default username is always: Username: root
you are trying to accomplish (e.g., pulling user logs, changing network settings) The exact model of your ZKTeco device (e.g., F18, uFace800)