CVE-2017-14470

CVE-2017-14470 is a critical access control vulnerability affecting Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier. An unauthenticated attacker can send specially crafted packets to perform read or write operations, leading to sensitive information disclosure, settings modification, or ladder logic alteration. With a CVSS score of 9.8 (Critical), this vulnerability requires no user interaction or privileges, making it easily exploitable over the network. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 10 mentions.