https://www.bleepingcomputer.com/news/security/dropbox-zero-day-vulnerability-gets-temporary-fix/

A zero-day vulnerability exists in Dropbox for Windows that allows attackers to gain permissions reserved to SYSTEM, the most privileged account on the operating system.

The unpatched security flaw affects standard Dropbox installations. It relates to the updater that runs as a service and is responsible for keeping the application up to date.