RuggedCom Rugged Operating System < 3.10.1 - Unauthenticated Backdoor Account Access via MAC Address Calculation
RuggedCom Rugged Operating System (ROS) 3.10.x and earlier has a factory account with a password derived from the MAC Address field in the banner, which makes it easier for remote attackers to obtain access by performing a calculation on this address value, and then establishing a (1) TELNET, (2) remote shell (aka rsh), or (3) serial-console session.