After they came across some serious zero-day vulnerabilities in some of their products, Adobe released a security update to patch up Adobe Reader 9.4.6 and earlier 9.x versions and Adobe Acrobat 9.4.6 and earlier 9.x versions.
Since the X (10.1.1) variants can be protected by using them in
Protected Mode and
Protected View, the issues that affect them will only be resolved in the next quarterly security update scheduled for January 10, 2012.
Users who rely on Adobe Reader 9.4.6 and earlier 9.x versions for Windows are recommended to update to Adobe Reader 9.4.7. Adobe also
advises users of Adobe Acrobat 9.4.6 and earlier 9.x versions for Windows to update to Adobe Acrobat 9.4.7.
Adobe Acrobat 9.4.7 for Windows is available for download
here Adobe Reader 9.4.7 for Windows is available for download
here