In case you're still running flash on your web browsers (which fewer and fewer people do these days), Adobe just released an update for Adobe Flash Player for Windows, macOS, Linux and Chrome OS. These updates, according to Adobe, " Address critical vulnerabilities in Adobe Flash Player 22.214.171.124 and earlier versions. Successful exploitation could lead to arbitrary code execution in the context of the current user."
Additionally, Adobe releases updates for Adobe Experience Manager, Adobe Connect and the widely used Adobe Acrobat Reader. While some softwares will update themselves via prompt, some will not. Either way. a good rule of thumb is to always stay up-to-date, especially with regard to Adobe Flash. Which by the way, will only be supported by Adobe until 2020 (really, we recommend you remove it now.)