CVE-2016-5797

CVE-2016-5797 describes an information disclosure vulnerability in Tollgrade LightHouse SMS versions prior to 5.1 patch 3. This flaw allows remote attackers to enumerate valid usernames by observing differing error messages for failed authentication attempts based on whether the username exists. The vulnerability has a CVSS v3 score of 5.3 (Medium), indicating it can be exploited over a network with low attack complexity, potentially leading to a partial compromise of confidentiality. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.