“You cannot access the biometric machine through telnet. The username and password is set by the manufacturer. They will use the telnet account credentials only for their internal development and testing purpose.”
According to security analysis, these default credentials are often found within the device's configuration files, typically named ZKConfig.cfg , and are distinct from the standard administrator passwords used for the web interface or on-device menu.
Log into the device via Telnet using the legacy credentials. Execute the password command: passwd root Use code with caution. Enter a complex, unique alphanumeric passphrase. zmm220 default telnet password updated
The 2025 security update—which implements a and requires a firmware update to version 15.00 for the ZMM220 platform—represents a significant step forward in securing these widely deployed devices. The key takeaway for administrators is straightforward: do not treat the ZMM220 platform as having a “default Telnet password” to be used for routine management. Instead, leverage the documented web interface and connection protocols, implement the security measures outlined above, and keep firmware current to maintain the strongest possible security posture for your biometric access control infrastructure.
The 2025 security initiative introduced significant improvements that are for ZMM200-220-210 platforms. Administrators should: “You cannot access the biometric machine through telnet
The updated default Telnet password has several implications for users:
The password, which used to be empty or password , has likely changed to one of the following, depending on the specific model variation (e.g., F18, F22, K40): Zksoft88 !Zk123!@# (Common in newer hardened firmware) 8888 (As reported in some generic MKW series manuals) Log into the device via Telnet using the legacy credentials
For the (a common hardware platform for ZKTeco biometric and access control devices), the default telnet password found in configuration backups is: Telnet Password: z1k2t3e4c5h