Attention Internet Explorer Users - Microsoft has released a patch for a new vulnerability - CVE-2018-8653 - An attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Another reason why regular users should not have local admin privileges (Best Practice)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8653