https://www.pcworld.com/article/344...ake-over-your-entire-pc-so-stop-using-it.html
The alert goes on explain what this means for users. “An attacker who successfully exploited the vulnerability could gain the same user rights as the current user,” Microsoft says. “If the current user is logged on with administrative user rights, 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.”
In other words, if an attacker is able to convince you to click on an affected webpage, that attacker can do whatever they want to your PC and your stored data.