Adobe has released a mega-update for its Reader and Acrobat software products to fix a total of eight documented security vulnerabilities. The update comes with significant security improvements, including the on-by-default addition Enhanced Security, a feature that provides a set of default restrictions and a method to define trusted locations that should not be subject to those restrictions. Adobe rates this a critical update on all platforms. The flaws affect Adobe Reader 9.2, Acrobat 2.2 and Reader 8.1.7 for Windows, Macintosh and UNIX.
Source: https://threatpost.com/adobe-pdf-reader-gets-another-security-makeover-011310/73368/