Adobe Acrobat 9.x before 9.2, 8.x before 8.1.7, and possibly 7.x through 7.1.4 allows attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via unspecified vectors. Per: http://www.adobe.com/support/security/bulletins/apsb09-15.html
This update resolves a memory corruption issue that could potentially lead to code execution. This issue is specific to Acrobat and does not affect Adobe Reader. (CVE-2009-3460).
NOTE: this issue is resolved in the Acrobat 9.2 and 8.1.7 updates. Per: http://www.adobe.com/support/security/bulletins/apsb09-15.html
Solution
Acrobat
Acrobat Standard and Pro users on Windows can find the appropriate update here:
http://www.adobe.com/support/downloads/product.jsp?product=1&platform=Windows.
Acrobat Pro Extended users on Windows can find the appropriate update here: http://www.adobe.com/support/downloads/product.jsp?product=158&platform=Windows
Acrobat 3D users on Windows can find the appropriate update here:
http://www.adobe.com/support/downloads/product.jsp?product=112&platform=Windows.
Acrobat Pro users on Macintosh can find the appropriate update here:
http://www.adobe.com/support/downloads/product.jsp?product=1&platform=Macintosh.