Any system is potentially vulnerable to hacking. It would be arrogant to suggest otherwise. However, I can advise you that with common cases of malware, there are very few points of infection on a Mac. 99 times out of 100, MalwareBytes for Mac will demolish these threats:
https://www.malwarebytes.com/mac-download/
Furthermore, the Vault 7 stuff you cite would be used in very niche circumstances. This isn't readily available technology that's been floating about the interwebz, which can happily make its way onto your computer when you Google search 'big boobies'. We're talking about coordinated uses to monitor a specific person: breaking into their home, planting tracking devices, all the rest of it. If you don't need to worry about that in your daily life, you probably don't need to worry about this malicious code.
TL;DR: if you're important enough to get your Mac targeted by the malware you mentioned, they'll already be watching you in every other aspect of your life. I hope that provides more reassurance than terror!