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."
https://exchange.xforce.ibmcloud.com/vulnerabilities/51126
http://www.redhat.com/support/errata/RHSA-2009-1109.html
http://www.adobe.com/support/security/bulletins/apsb09-07.html
http://security.gentoo.org/glsa/glsa-200907-06.xml