The Cloud MQTT service of the affected products supports wildcard topic subscription which could allow an attacker to obtain sensitive information from tapping the service communications.
Exploitability
AV:LAC:LAT:NPR:NUI:NVulnerable System
VC:HVI:NVA:NSubsequent System
SC:NSI:NSA:N6.9/CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NOther