CVE-2008-5331

Adobe Acrobat 9 uses more efficient encryption than previous versions, which makes it easier for attackers to guess a document’s password via a brute-force attack.

Date published : 2008-12-04

http://www.securityfocus.com/bid/32610

http://blogs.adobe.com/security/2008/12/acrobat_9_and_password_encrypt.html