This official release is the same as last month's beta patch except for the installer and documentation, and as before it addresses an exploit that can be used to crash servers and is therefore not needed if you only run the client.
Call of Duty(tm) 1.5b Server Patch
This is the official release of the v1.5b Call of Duty(tm) Server Patch by
This is a server side only patch. If you do not plan on hosting a server there
is no need to download and install it.
Server hosts must have the Call of Duty(tm) v1.5 patch installed before
updating with the v1.5b Server Patch
This patch resolves an exploit that can be used to crash servers
* It is recommended that any user modifications that have been installed to the
Call of Duty(tm) directory be removed before installing this patch. These
modifications are not supported by Activision(r) and may not be compatible with
some of the new features that are included.