This is a Perl script that performs a multi-threaded scan for OpenVNC 4.11 authentication bypass vulnerabilities. The script connects to an IRC server and listens for scan commands in a designated channel. Once a scan command is received with a specified subnet, the script divides the workload and creates multiple child processes to scan IP addresses in the specified subnet. Any vulnerable IP addresses are logged to a file. The script also provides real-time feedback on the progress of the scan in the IRC channel.