CVE 2010-2206
Array index error in AcroForm.api in Adobe Reader and Acrobat 9.x before 9.3.3, and 8.x before 8.2.3 on Windows and Mac OS X, allows remote attackers to execute arbitrary code via a crafted GIF image in a PDF file, which bypasses a size check and triggers a heap-based buffer overflow.
See the 
CVE page on Mitre.org
for more details.
