The Schneider Electric APC Smart-UPS SMC Series, among others, is a product of Schneider Electric, a French company. Schneider Electric APC Smart-UPS SMT Series is a line interactive power protection for servers, point-of-sale, routers, switches, hubs and other network devices. Schneider Electric APC Smart-UPS SMX Series is an intelligent and efficient network power protection. authentication bypass vulnerability exists in several Schneider Electric products, which can be exploited by an attacker to cause an unauthenticated connection to the uninterruptible power supply when sending an incorrect connection.