Dell reportedly sat silently on a critical SupportAssist vulnerability for nearly 6 months, according to the security researcher that reported it to the company. If you have the software installed, then chances are that your laptop will be affected, and it will be open to attackers unless you have recently updated SupportAssist.
https://www.notebookcheck.net/Dell-laptops-confirmed-to-be-affected-by-serious-SupportAssist-security-flaw.420034.0.html