Dell has issued numerous patches as part of its latest Security Advisory (DSA-2021-088) in response to findings of a "severe" CVE consisting of five different privilege-exploit bugs that have apparently been in effect for the last 12 years. Fortunately, they have never been acted upon, which, as they could have allowed unauthorized users to write data or manipulate memory.
https://www.notebookcheck.net/Dell-s-firmware-update-driver-has-harbored-severe-security-bugs-for-over-a-decade-according-to-researchers.537903.0.html