The instant message service in Timbuktu Pro 8.6.5 RC 229 and earlier for Windows allows remote attackers to cause (1) a denial of service (daemon crash) via an invalid Version field or (2) a denial of service (CPU consumption and daemon termination) via an invalid or partial message.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.