CVE-2017-6416

CVE-2017-6416 is a critical buffer overflow vulnerability affecting SysGauge version 1.5.18. An unauthenticated attacker can achieve arbitrary code execution by presenting a specially crafted, excessively long "Service ready" (220) string during SMTP connection verification. This vulnerability has a CVSS score of 9.8, indicating a severe impact with high confidentiality, integrity, and availability compromise, and is easily exploitable over the network without user interaction. While not listed on the KEV catalog or Hot List, a Metasploit module exists for this exploit, though there is no evidence of active exploitation or significant community discussion.