The Remote Desktop Protocol (RDP) implementation in Microsoft Windows 7 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 does not properly encrypt sessions, which makes it easier for man-in-the-middle attackers to obtain sensitive information by sniffing the network or modify session content by sending crafted RDP packets, aka "RDP MAC Vulnerability."
Category : Cryptographic Issues Weaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed.