Critical vulnerabilities have been identified in Adobe Reader and Acrobat 8.1.2 and earlier versions. These vulnerabilities would cause the application to crash and could potentially allow an attacker to take control of the affected system.

Adobe Reader 9 and Acrobat 9 are not vulnerable to these issues. Adobe recommends users of Acrobat 8 and Adobe Reader 8 who can’t update to Adobe Reader 9 install the 8.1.3 update to protect themselves from potential vulnerabilities.