Normally Adobe releases Flash updates on Patch Tuesday, but when there’s a critical security vulnerability they will release an ‘out of cycle’ fix. That’s what happened with Flash 18.104.22.168, which was released on October 26 to address a single vulnerability: CVE-2016-7855 (details pending).
Anyone who uses Flash in a web browser should update Flash as soon as possible. If you’re not sure whether you’re running the latest Flash, go to the About Flash page on the Adobe web site.
As always, Internet Explorer and Edge will get updates to their embedded Flash via Windows Update (bulletin MS16-128), and Chrome will update itself automatically. Still, it’s a good idea to make sure by visiting the About Flash page.