The Forgot Password feature in Cisco WebEx Meetings Server 1.5(.1.131) and earlier allows remote attackers to enumerate administrative accounts via crafted packets, aka Bug IDs CSCuj67166 and CSCuj67159.
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.
Exposure of Sensitive Information to an Unauthorized Actor The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.