CVE-2018-0423

CVE-2018-0423 is a critical buffer overflow vulnerability in the web-based management interface of Cisco RV110W, RV130W, and RV215W VPN routers, specifically within the Guest user feature. An unauthenticated, remote attacker can exploit this by sending malicious requests, leading to a denial of service or arbitrary code execution. With a CVSS score of 8.1 (High), the attack is network-based and requires high attack complexity, but no user interaction. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness of its potential impact.