Adobe released a security update for Acrobat XI and Reader version 11.0.4 on Tuesday.
The vulnerability is a regression error, meaning that it had been previously fixed, but re-exposed by some other change. Only the Windows versions of the 11.x generation of products are affected. The new, fixed version is 11.0.5.
The vulnerability is rated critical, but Adobe says they know of no active exploits in the wild.
Adobe also released a security update for RoboHelp 10 for Windows. Adobe knows of no active exploits of this vulnerability either.