As you could read in this post Citrix has released a patch/update for all of its Provisioning Services versions.
This post is written with PVS 6.1 in mind and is only the PVS server side. The target device update will be posted on a different post.
The user must have administrative rights to the server.
• The server install consists of the console and server installation programs
• You must uninstall before using any of the installations included in hotfix
• Included with the target installation programs are the binaries so that they can be used to replace the present binaries without reimaging the target device.