A stack-based buffer overflow vulnerability exists in the makeRequest.cgi binary of Linksys RE7000 routers with firmware FW_v2.0.15_211230_1012. The vulnerability arises from improper parsing of /proc/net/arp lines using sscanf, which allows input larger than the allocated buffers, leading to stack corruption. Local attackers who can control the contents of /proc/net/arp may exploit this flaw to cause denial of service or potentially execute arbitrary code.