Adobe will be releasing an update for Acrobat Reader 9.1.3 and Acrobat 9.1.3 for Macintosh and Windows versions. A critical vulnerability exist and is being exploited in the wild, users should disable JavaScript in Acrobat. Adobe is reporting that it is possiable that an attacker may be able to work around this and conduct the exploit taking control of your machine. Users should use caution and only open PDF from trusted sites.
The release is expected to be available on October 13, 2009.