CVE-2016-6398

CVE-2016-6398 describes an information disclosure vulnerability in the PPTP server of Cisco IOS 15.5(3)M, where improper initialization of packet buffers allows remote attackers to read sensitive data from previous network communications. This vulnerability has a CVSSv3 score of 5.3 (Medium), indicating a low-complexity attack that can be executed remotely without authentication, leading to a potential loss of confidentiality. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.