CVE-1999-1420

CVE-1999-1420 describes a critical backdoor vulnerability present in several NBase switches, specifically the NH2012, NH2012R, NH2015, and NH2048 models. This flaw allows remote, unauthenticated attackers to gain full control over the affected devices by leveraging an unchangeable hardcoded password, enabling them to modify switch configurations. With a CVSS score of 10.0, this vulnerability is highly severe due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its age and high severity, there is no evidence of active exploitation, nor are there publicly available exploit modules in common frameworks like Metasploit or ExploitDB. Community discussion is minimal, with only one mention found, and there is no media coverage.