A vulnerability exists in the Intelligent Electronic Device (IED) Connectivity Package (ConnPack) credential storage function in Hitachi Energy’s PCM600 product included in the versions listed below, where IEDs credentials are stored in a cleartext format in the PCM600 database. An attacker who manages to get access to the exported backup file can exploit the vulnerability and obtain credentials of the IEDs. The credentials may be used to perform unauthorized modifications such as loading incorrect configurations, reboot the IEDs or cause a denial-of-service on the IEDs.