CVE-2017-14468

CVE-2017-14468 is a critical access control vulnerability affecting Allen Bradley Micrologix 1400 Series B PLCs with firmware FRN 21.2 and earlier. This flaw allows an unauthenticated attacker to send specially crafted packets, leading to sensitive information disclosure, modification of settings, or alteration of ladder logic. With a CVSS score of 9.8 (Critical), the vulnerability is easily exploitable over the network with low attack complexity and no user interaction, enabling full compromise of confidentiality, integrity, and availability. While it has a high EPSS score indicating exploitability, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.