Apparently some Google employees decided to test Adobe Reader after they found several security-related bugs in the PDF reader code used in Google Chrome. They found sixty issues that cause crashes, about forty of which could provide attack vectors.
Bugs, crashes and security issues in Adobe software are nothing new. But given the frequency and number of updates for Reader, one might assume that Adobe had a handle on these issues. The ongoing crashing problems with Flash on Windows 7 indicate otherwise, as does this new revelation from Google.