Adobe has issued updates to its Flash product to patch some security vulnerabilities found in the product. At least two of the vulnerabilities are currently being exploited in the wild against Firefox, meaning that you should be sure to update to the latest version of Flash immediately.
The attack works by tricking a user into clicking a link. The link leads to a website that features a malicious piece of Flash content designed to exploit the security holes in Flash Player for Firefox. Head over to Adobe's website to download the latest version of Flash Player.
Those using Flash Player in Google Chrome or Internet Explorer 10 should be automatically updated to the latest version.