The ZMM220 is a common hardware platform used in ZKTeco biometric devices, such as fingerprint and facial recognition terminals. If you are attempting to access the command-line interface via Telnet, the default credentials can vary depending on the specific firmware version or vendor customization. Common Default Telnet Credentials
Impact: Critical Successful exploitation results in a complete loss of confidentiality, integrity, and availability of the affected device. If the device resides on a trusted internal network, an attacker could potentially pivot to other critical servers or exfiltrate sensitive data (e.g., video surveillance feeds). zmm220 default telnet password
Disable Logging: Clear audit trails to hide unauthorized entry. The ZMM220 is a common hardware platform used
Likelihood: High Automated botnets actively scan the internet for Port 23 (Telnet) and attempt brute-force login using default credential dictionaries. Devices exposed to the public internet are compromised within minutes of deployment. If the device resides on a trusted internal
Accessing the device via Telnet provides root-level access. An unauthorized user with these credentials can: