I do not now, nor have ever, used IE on this computer or its predecessor.
You may not use the Internet Explorer browser, but I can assure you that you probably use Internet Explorer every day. It provides a lot of functionality for Windows - including Internet connectivity - and for Windows programs like Windows Live Mail. If you are running Windows 8.1, then you have Internet Explorer 11 installed and your computer falls into the category of affected machines as far as this bug is concerned and as far as our limited experience of it extends. I don't think your version of Word has any bearing on the matter.