SUMo, or Software Update Monitor, is a free utility that will tell you if updates are available for all of your installed programs. It's also available as a portable app.
As detailed in this security bulletin, Nvidia is advising all GPU owners to update to the latest driver which fixes vulnerabilities in the kernel mode layer and the vGPU Manager. A flaw in those could allow data tampering, escalation of privileges, and denial of service, among others.