CVE 2009-1859
Adobe Reader 7 and Acrobat 7 before 7.1.3, Adobe Reader 8 and Acrobat 8 before 8.1.6, and Adobe Reader 9 and Acrobat 9 before 9.1.2 might allow attackers to execute arbitrary code via unspecified vectors that trigger memory corruption.
See the 
CVE page on Mitre.org
for more details.
