neowin[.]net/news/adobe-flash-player-3200171
Flash is disabled by default in all my browsers, but there are those [very] few times it's needed, so it's installed. Updating Flash however has become a bit uncertain, so it's easiest to just download the latest & run the update. This is one of the very few remaining places that you can find the complete update to download.
Note: while you're there, neowin[.]net/news/cat/software also has the links to download the new version of the GIMP.