An exploitable incorrect return value vulnerability exists in the mp_check function of Tarantool's Msgpuck library 1.0.3. A specially crafted packet can cause the mp_check function to incorrectly return success when trying to check if decoding a map16 packet will read outside the bounds of a buffer, resulting in a denial of service vulnerability.

An exploitable out-of-bounds array access vulnerability exists in the xrow_header_decode function of Tarantool 1.7.2.0-g8e92715. A specially crafted packet can cause the function to access an element outside the bounds of a global array that is used to determine the type of the specified key's value. This can lead to an out of bounds read within the context of the server. An attacker who exploits this vulnerability can cause a denial of service vulnerability on the server.