According to the Adobe security bulletin dated June 23, 2015:
“Adobe has released security updates for Adobe Flash Player for Windows, Macintosh and Linux. These updates address a critical vulnerability (CVE-2015-3113) that could potentially allow an attacker to take control of the affected system.
Adobe is aware of reports that CVE-2015-3113 is being actively exploited in the wild via limited, targeted attacks. Systems running Internet Explorer for Windows 7 and below, as well as Firefox on Windows XP, are known targets.”
So update asap! Many conferencing solutions (like Adobe Connect) and Flash games use the Flash plugin.
However, if you only use Adobe Flash for watching YouTube videos, YouTube now defaults to HTML5 instead of Adobe Flash for playing videos in Google Chrome, IE 11, Apple Safari 8 and in Mozilla Firefox. So you can uninstall Adobe Flash if you are using these browsers (and not worry about keeping Flash up to date)
The latest update bumps the latest version of Flash Player for Windows and Mac OS X to version 18.0.0.194.
To determine what version of the Adobe Flash player you have on your Windows, Macintosh or Linux system, visit
http://www.adobe.com/software/flash/about/
To download an offline version of Adobe Flash Player for Windows, Mac OS X and Linux without any adware or bundled third-party offers, visit
http://www.adobe.com/products/flashplayer/distribution3.html
Opera and Chromium browser users, you’ll have to download the flash player installer from http://www.adobe.com/go/getflash.
Windows users should take note that
- the Flash Player in Microsoft Internet Explorer v9 and earlier versions of Internet Explorer,
- the Flash player in web browsers like Mozilla Firefox and Safari
- the Flash player in web browsers in Chromium and Opera
are separate installs. You should install and update versions of Adobe Flash for all three browser variations if you have all three installed.
For Internet Explorer v10 and Internet Explorer v11 (for users for Windows 7 Service Pack 1 and Windows 8), these browsers have Adobe Flash Player built-in and users should update their Internet Explorer browser versions.
Google Chrome browser users has Adobe Flash Player built-in and users should update the Google Chrome browser to the latest version. See https://support.google.com/chrome/answer/95414 on how to do so.