Most of the exploits and listening techniques reported by the information from Wikileaks Vault 7 indicate that the CIA can use to eavesdrop are mostly targeted tools, and not the blanket surveillance hacks that were originally reported.
Wikileaks has announced Vault 7, a massive collection of documents that show how the CIA uses malware and other hacking techniques to spy online. Some of the techniques includes using smartTVs as a spying device since they use cameras and microphones built into the TVs. Samsung warned of this in their terms of service for their TVs last year. But Leo says that the CIA doesn't really have a switch to turn on all TVs, and if they did, the data they'd receive would be so massive and 99.9% of it would be useless. It could be used for targeted eavesdropping, though.