PC World published a story that a new exploit circulating for a critical unpatched bug in Adobe Reader

First uncovered last week by Washington-based researcher Mila Parkour, attackers are using rigged PDF documents that include code to exploit a zero-day vulnerability in the widely used Reader PDF viewer as well as in Acrobat, Adobe's PDF creation software.

The sophisticated exploit bypasses two important defenses that Microsoft erected to protect Windows, ASLR (address space layout randomization) and DEP (date execution prevention), researchers have confirmed.

  Adobe PDF Flaw Remains Unpatched