S48012 is a "container" hot fix that contains "member" hot fixes which will update your SAS software components.
See "What is a container hot fix?" in the SAS Hot Fix FAQ for more information on container and member hot fixes.
A manifest listing the contents of each of the following "member" hot fixes is available:
N48011 manifest for SAS Web Server 9.4
S44012 manifest for SAS Environment Manager 2.1_M1