Smart Video Doorbell firmware versions prior to 2.01.078 contain an active debug code vulnerability that allows an attacker to connect via Telnet and gain access to the device.
Exploitability
AV:AAC:LAT:NPR:LUI:NVulnerable System
VC:HVI:HVA:HSubsequent System
SC:NSI:NSA:N8.6/CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NOther