An issue was discovered in icoutils 0.31.1. A buffer overflow was observed in the "extracticons" function in the "extract.c" source file. This issue can be triggered by processing a corrupted ico file and will result in an icotool crash.

An issue was discovered in icoutils 0.31.1. A buffer overflow was observed in the "decodeneresourceid" function in the "restable.c" source file. This is happening because the "len" parameter for memcpy is not checked for size and thus becomes a negative integer in the process, resulting in a failed memcpy. This affects wrestool.

An issue was discovered in icoutils 0.31.1. An out-of-bounds read leading to a buffer overflow was observed in the "simplevec" function in the "extract.c" source file. This affects icotool.