Radio Thermostat CT80 And CT50 with firmware 1.4.64 and earlier does not restrict access to the API, which allows remote attackers to change the operation mode, wifi connection settings, temperature thresholds, and other settings via unspecified vectors.

The Local HTTP API in Radio Thermostat CT50 and CT80 1.04.84 and below products allows unauthorized access via a DNS rebinding attack. This can result in remote device temperature control, as demonstrated by a tstat t_heat request that accesses a device purchased in the Spring of 2018, and sets a home's target temperature to 95 degrees Fahrenheit. This vulnerability might be described as an addendum to CVE-2013-4860.