This security vulnerability is for some version models of the [international Samsung Galaxy S3] and some versions of the [Verizon / international Galaxy Note 2]. North American versions of the Galaxy S3 are not affected. It requires stock software. Custom ROMs should not be affected. North American versions of the Galaxy Note 2 are not affected at this time other than the Verizon version. The original developers thread over at XDA where this was discovered is: http://forum.xda-developers.com/showthread.php?t=2048511 If you want to root your affected device with this exploit, you can get instructions at: http://forum.xda-developers.com/showthread.php?t=2050297 Here is some press coverage from TheVerge: Serious vulnerability reportedly leaves Samsung Galaxy S III and other devices wide open to malware http://www.theverge.com/2012/12/16/3773550/samsung-galaxy-s-iii-galaxy-note-ii-serious-vulnerability This vulnerability requires you to download and run malicious apps onto your device to be affected.