Adobe has published a security bulletin APSB09-15 for security issue leading to bypass of intended security restrictions, addressed in Adobe Reader and Acrobat products: http://www.adobe.com/support/security/bulletins/apsb09-15.html Quoting Adobe bulletin APSB09-15 for issues descriptions: This update resolves an input validation issue that could potentially lead to a bypass of Trust Manager restrictions (CVE-2009-2981).
This issue has been addressed in following products: Extras for RHEL 3 Extras for RHEL 4 Extras for Red Hat Enterprise Linux 5 Via RHSA-2009:1499 https://rhn.redhat.com/errata/RHSA-2009-1499.html