Two critical Common Vulnerabilities and Exposures in FreeType and libpng. libpng has been updated to version 1.4.3, a malicious user can execute arbitrary code. FreeType has been updated to version 2.4.2 to address issues related to processing of a maliciously crafted font. This vulnerability has been present in other Apple products.
One important thing to keep in mind is that devices such as Apple TV, xBox 360 and the WII all are devices that if online have to be part of a risk assessment. Just as mobile devices and the way in which users use them is important to understand so are these devices.