Multiple unspecified vulnerabilities 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 have unknown impact and attack vectors, related to "Adobe internally discovered issues."
Gentoo Linux Security Advisory GLSA 200907-06 - Adobe Reader is vulnerable to remote code execution via crafted PDF files. Versions less than 8.1.6 are affected.