Adobe has released a new security bulletin titled: "APSB09-19 - Security updates available for Adobe Flash Player" which warns of "Critical vulnerabilities that have been identified in Adobe Flash Player version 10.0.32.18 and earlier. These vulnerabilities could cause the application to crash and could potentially allow an attacker to take control of the affected system."
Adobe recommends users of Adobe Flash Player 10.0.32.18 and earlier versions update to Adobe Flash Player 10.0.42.34 by downloading it from the Flash Player Download Center or by using the auto-update mechanism within the product when prompted.
Be careful at the Adobe Flash Player Download Center page as they will ask if you want to download and install a McAfee security scan program at the same time. If you have a working anti-virus solution, which is up to date with definitions, you should uncheck the option to download the McAfee program.