IrfanView version 4.10 .FPX file memory corruption exploit that launches calc.exe.
fd482517054c0ff7f8c37b28f526da644268f2b1d0c0a9c0b22aa1f90d8c9676
IrfanView versions 3.99 and below .IFF file local stack buffer overflow exploit that spawns calc.exe.
8c0a11932d465dcab8ff7aa0bf762b6ff88fc5496dfd89402254ea90732bde2c