How to get Updated VC plugin for themes that haven't been installed?

I’ve got three themes that I’ve yet to use on individual projects. How can I gain access to the VC security fix? Do I have to install the themes? Seems like a lot of work in order to get the update.

Thanks

If you haven’t used them yet, can you just download the updated/fixed themes before you use them?

If dtbaker’s suggestion didn’t help, please hop over to this thread with any follow up question: Visual Composer Security Vulnerability Fix. Thanks!