http://www.informationweek.com/news/sec ... ction=News
An attacker could exploit these vulnerabilities by convincing a user to load a specially crafted Adobe Portable Document Format (PDF) file. Acrobat integrates with popular web browsers, and visiting a website is usually sufficient to cause Acrobat to load PDF content.
This vulnerability could allow a remote attacker to execute arbitrary code.
This looks like a good way to distribute a keylogger to WoW players, much like a Windows vulnerability in graphics rendering allowed someone uploading an infected screenshot to an addon site to spread a keylogger.