VU#756733: Retraction of "Calix GS7 XGS GS5239XG residential router contains missing authentication vulnerability"

Overview The Calix GS7 XGS GS5239XG router running firmware EXOS/6.6.47 contains a missing authentication vulnerability that exposes its UPnP (Universal Plug and Play) WANIPConnection service on the public WAN interface After further analysis of the case alongside the Calix security team, we have determined that this is not a valid vulnerability, based on testing and evidence currently available …