Today, a Security Bulletin (APSB13-08) has been posted to address security issues in Adobe Flash Player 11.6.602.168 and earlier versions for Windows, Adobe Flash Player 11.6.602.167 and earlier versions for Macintosh, and Adobe Flash Player 18.104.22.1680 and earlier versions for Linux.
Adobe is aware of reports that CVE-2013-0643 and CVE-2013-0648 are being exploited in the wild in targeted attacks designed to trick the user into clicking a link which directs to a website serving malicious Flash (SWF) content. The exploit for CVE-2013-0643 and CVE-2013-0648 is designed to target Flash Player in Firefox.
Adobe recommends users apply the updates for their product installations.
You can get the latest version here: http://www.adobe.com/go/getflash
More information: http://www.adobe.com/support/security/bulletins/apsb13-08.html