Format string vulnerability in Kreed 1.05 and earlier allows remote attackers to execute arbitrary code via format specifiers in (1) a nickname or (2) message text.

Kreed 1.05 and earlier allows remote attackers to cause a denial of service (server disconnect) via a long UDP packet, which causes a "message too long" socket error.

The scripts that handle players in Kreed 1.05 and earlier allow remote attackers to cause a denial of service (server freeze) via a long (1) nickname or (2) model type, which generates dialog boxes on the server that must be manually handled before the server continues the game.