CVE-2002-2316

CVE-2002-2316 affects Cisco Catalyst 4000 series switches running specific CatOS versions (5.5.5, 6.3.5, 7.1.2). The vulnerability causes unicast traffic to be broadcast across the switch due to a failure in learning MAC addresses from initial packets, allowing remote attackers to sniff network information. With a CVSS score of 5.0, this issue has a network attack vector, low complexity, and primarily impacts confidentiality (information disclosure). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing, though it has garnered significant community discussion with 10 mentions.