There are two hotfixes for different versions of RAD Studio that have been released over the last few days. All of these fixes are listed in the registered users download page at cc.embarcadero.com/myreg (notice they are sorted by version first, and date next).

Bitmap Buffer Overflow

This issue was already fixed about a month ago, but the new fix is more comprehensive and covers other corner cases. This is an important fix as it makes VCL applications vulnerable to attacks:

The fix will also be included in a future XE7 update 1, of course. For older versions, manual steps are available in the support site at support.embarcadero.com/article/44015.

PAServer Issues with Simulator

This fix relates with issues with the new iOS 8 simulator, and allows you (as a temporary work around) to use the iOS 7.1 simulator:

The readme with some information is available at www.fmxexpress.com/xcode-6-ios-7-1-simulator-hotfix-for-delphi-xe6-firemonkey-paserver/