An attacker must have valid logon credentials and be able to log on locally to exploit these vulnerabilities. The vulnerabilities could not be exploited remotely or by anonymous users.
So if you allow hackers physical access to your PC you should be worried. Otherwise not.
That's quite a requirement, that logging on locally bit.
NB - given physical access to a Windows PC or server (not domain controller) even I can hack the system and change the admin password.
SD