APsystems is a micro-inverter from APsystems USA. APsystems ENERGY COMMUNICATION UNIT (ECU-C) Power Control Software versions V4.1NA, V3.11.4, W2.1NA, 4.1SAA, and C1.2.2 are vulnerable to an access control error that could be exploited by attackers to access sensitive data, execute certain commands and functions with administrator privileges, and Other attacks can be launched.