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Description
HMS Networks Ewon Flexy with firmware before 15.0s4, Cosy+ with firmware 22.xx before 22.1s6, and Cosy+ with firmware 23.xx before 23.0s3 have improper neutralization of special elements used in an OS command allowing remote code execution by attackers with low privilege access on the gateway, provided the attacker has credentials.
References
www.hms-networks.com/p/flexy20500-00ma-ewon-flexy-205
hmsnetworks.blob.core.windows.net/....pdf?sfvrsn=f7c027b8_13