Affected: Yokogawa STARDOM FCJ Controllers, Yokogawa STARDOM FCN-100 Controllers, Yokogawa STARDOM FCN-RTU Controllers, Yokogawa STARDOM FCN-500 Controllers

Yokogawa STARDOM FCJ controllers R4.02 and prior, FCN-100 controllers R4.02 and prior, FCN-RTU controllers R4.02 and prior, and FCN-500 controllers R4.02 and prior utilize hard-coded credentials that could allow an attacker to gain unauthorized administrative access to the device, which could result in remote code execution.