Release 4.63.2 beta

Mark Nienberg gmane at
Wed Aug 15 22:41:15 IST 2007

Julian Field wrote:

> 2 Added *.fdf to the list of dangerous filenames. Opening a .fdf file can
>   cause the loading of any file on the internet into Adobe Acrobat.

There are perfectly legitimate reasons to send email messages with fdf files 
attached.  If you use the "browser-based review" feature of Acrobat that allows 
multiple users to review and comment on a pdf file, then the automatically generated 
email invitations will have an fdf file attached.  The user clicks on the fdf file to 
open the document in Acrobat. The document is usually on a webdav server.  Each 
user's comments are then sent to and saved on the webdav server by the Acrobat program.

Blocking fdf files will effectively disable one of the key features of Acrobat.


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