Format string vulnerability in the (1) Con_message and (2) conPrintf functions in con_main.c in Doomsday engine 1.8.6 allows remote attackers to execute arbitrary code via format string specifiers in an argument to the JOIN command, and possibly other command arguments.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25622
http://www.vupen.com/english/advisories/2006/1221
http://www.securityfocus.com/bid/17369
http://www.securityfocus.com/archive/1/429857/100/0/threaded
http://www.gentoo.org/security/en/glsa/glsa-200604-05.xml
http://securitytracker.com/id?1015860
http://secunia.com/advisories/19519
http://secunia.com/advisories/19515
http://lists.grok.org.uk/pipermail/full-disclosure/2006-April/044865.html