The download from the KB article applies only to editions of Office that are installed from an MSI file, usually on a CD. For Office 2013 that includes only a very small fraction of Office installations, mostly those from Volume (corporate) licenses and
those from MSDN subscriptions. All others, those that use the Click-to-Run installation method, get automatic updates.
I should have included more explanation in my previous post -- Office 365 is not the only installation that gets automatic updates and doesn't use the download from the KB article.
If you open any of the Office programs and click File > Account, do you see "Office Updates" on the right side? If so, the version number below that should currently be 15.0.4641.1002. That's the version number for the August 2014 updates, which include
the same fix as in the KB article. If the third group of numbers is lower than 4641, click the Update Options button and choose Update Now.