Some vulnerabilities have been reported in Adobe Flash Player, which can be exploited by malicious people to gain knowledge of sensitive information or compromise a user’s system.
1) An input validation error can be exploited to execute arbitrary code when a user e.g. visits a malicious website.
The vulnerability affects versions 188.8.131.52 and prior.
2) An error within the interaction of Flash Player and certain browsers can be exploited to leak key presses to a Flash Player applet.
The vulnerability affects versions 184.108.40.206 and prior on Linux and Solaris. It does not affect Flash Player 9.
A bug has also been reported in the validation of the HTTP Referer in versions 220.127.116.11 and prior, which may aid in e.g. CSRF (Cross-Site Request Forgery) attacks.
Secunia has constructed the Secunia Software Inspector, which you can use to check if your system is vulnerable:
Update to version 18.104.22.168.