Buffer overflow in the CL_vsprintf function in Takumi Yamada DX Library before 3.16 allows remote attackers to execute arbitrary code via a crafted string.
http://jvndb.jvn.jp/jvndb/JVNDB-2016-000001
http://jvn.jp/en/jp/JVN49476817/index.html
http://homepage2.nifty.com/natupaji/DxLib/dxvulnerability.html