RuggedCom

Overview
RuggedCom is a vulnerability that provides an easily accessed "back door" into the basic operating system used for device control in numerous systems used in an electric utility and other critical industries. Although there are no known instances of hackers exploiting this vulnerability, its disclosure forced the company and its customers to scramble to close this critical security gap.

Source

 * Cybersecurity and the Evolving Role of State Regulation, at 5.