Unity editor 6 installer on Windows (version 6000.0.32f1) installs an old and insecure VC++ 2010 runtime version 10.0.30319. Microsoft released a patched version 10.0.40219 in 2021. I think that Unity 2022 installers install the correct version.
I’ve let the team know about your post, the updated redist should be in 6000.1.0b3, and then make its way to other branches.
Keep an eye out on the release notes : )