Microsoft .NET Framework 2.0 SP2, 3.5, and 3.5.1 omits the ASLR protection mechanism, which allows remote attackers to obtain potentially sensitive information about memory addresses by leveraging the predictability of an executable image's location, aka ".NET ASLR Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-057
http://www.securitytracker.com/id/1031021