Adobe has released updated versions of Adobe Reader and Adobe Acrobat that fix critical security issues that affect Windows, Macintosh and Linux systems. These critical security issues could cause the application to crash and potentially allow an attacker to take control of the affected system.
Windows and Macintosh users should update to Acrobat and/or Reader XI (11.0.3).
Linux users should update to Acrobat and/or Reader 9.5.5.
More information, as well as links to software updates from Adobe, is available here: