Buffer overflow in client/server Doom (csDoom) 0.7 and earlier allows remote attackers to (1) cause a denial of service via a long nickname or teamname to the SV_SetupUserInfo function or (2) execute arbitrary code via a long string sent when joining a match or a long chat message to the SV_BroadcastPrintf function.

Format string vulnerability in the PrintString function in c_console.cpp in client/server Doom (csDoom) 0.7 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via format string specifiers in strings passed to the console.