Format string vulnerability in the visualization function in Jason Boettcher Liero Xtreme 0.62b and earlier allows remote attackers to execute arbitrary code via format string specifiers in (1) a nickname, (2) a dedicated server name, or (3) a mapname in a level (aka .lxl) file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25187
http://www.vupen.com/english/advisories/2006/0849
http://www.securityfocus.com/bid/16990
http://www.securityfocus.com/archive/1/426864/100/0/threaded