Heap-based buffer overflow in the JBIG2 filter in 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 remote attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2009-0510, CVE-2009-0511, CVE-2009-0888, and CVE-2009-0889.