Does this mean savitech needs to hypothetically set up some mitm attack somewhere and wait for you to send traffic, then they can decrypt and read, or does it mean that they can do that direct from your computer by virtue of that root certificate?
In a sense, your security becomes dependent on the security of Savitech. I imagine their private key is not as securely stored as a real CA would store theirs. (e.g. with Superfish, Lenovo included the private key on all laptops, for anyone to grab[1])
[1] https://en.wikipedia.org/wiki/Superfish#Lenovo_security_inci...