CVE-2017-6780

CVE-2017-6780 is a memory exhaustion vulnerability in the TCP throttling process of Cisco IoT Field Network Director (IoT-FND) and Connected Grid Network Management System (CG-NMS) versions prior to IoT-FND Release 4.0. An unauthenticated, remote attacker can exploit this by sending a high rate of TCP packets to specific open ports, causing the system to consume excessive memory. This leads to a temporary denial of service (DoS) as the device is forced to restart. The vulnerability has a CVSS v3.0 score of 7.5 (High), indicating a network-based attack with low complexity, requiring no privileges or user interaction, and resulting in high availability impact. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. The EPSS score is low, suggesting a minimal likelihood of exploitation in the wild.