Quake 3 engine, as used in multiple games, allows remote attackers to cause a denial of service (client disconnect) via a long message, which is not properly truncated and causes the engine to process the remaining data as if it were network data.
Star Wars Battlefront 1.11 and earlier allows remote attackers to cause a denial of service (application crash) via a join request that contains a memory address that causes the server to read arbitrary memory.