CVE-2018-21220

CVE-2018-21220 describes a buffer overflow vulnerability affecting numerous NETGEAR router models, including the D3600, D6000, D6100, D7800, R6100, R7500, R7500v2, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5, all requiring specific firmware updates. This vulnerability has a CVSS score of 8.8 (High), indicating that an unauthenticated attacker can exploit it over the adjacent network with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. While the vulnerability is severe, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage. Organizations should prioritize patching affected NETGEAR devices to mitigate this high-risk vulnerability.