Yes, it's possible to get hacked through TeamViewer.
I was able to do it by installing TeamViewer on a target computer and then connecting to it from my computer. I also had to be logged into the target computer's account, so that it would have a valid certificate for my computer.
After doing that, I was able to get the target computer's certificate and then use it to install a fake version of TeamViewer on my computer.
Yes, it is possible to get hacked through TeamViewer.