A recently discovered vulnerability in Adobe Reader allows an attacker to compromise the system with the privileges of the user running Reader. The vulnerability occurs because of the way Reader parses PDF files. Opening a malicious PDF file may trigger the bug, causing exploitation.
Attacks using this vulnerability have been seen in the wild. There are reports that adversaries are actively targeting a number of users, for exploitation.
1. Start Adobe Reader.
2. Select Edit, then Preferences from the menu. The Preferences dialog box opens.
5. Click OK.