The HTTP/XML-RPC service in Crysis 1.21 (game version 1.1.1.6156) and earlier allows remote attackers to cause a denial of service (crash) via a long HTTP request, which triggers a NULL pointer dereference.
https://exchange.xforce.ibmcloud.com/vulnerabilities/43126
http://www.securityfocus.com/archive/1/493385/100/0/threaded