VUPEN Vulnerability Research Team discovered a critical vulnerability in Adobe Acrobat and Reader. This vulnerability is caused by a buffer overflow error when processing malformed PNG data, which could be exploited by attackers to execute arbitrary code by tricking a user into opening a specially crafted PDF document.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/88448/adobepng-overflow.txt
Source: https://packetstormsecurity.com/files/88448/Adobe-Acrobat-Reader-PNG-Data-Buffer-Overflow.html