Security vulnerabilities in Modicon Controllers M241 / M251

As of 11/08/2026, Modicon Controllers M241 / M251 recorded 0 security vulnerabilities in the last 90 days, of which 0 are rated High or Critical. None of these vulnerabilities is actively exploited (KEV) according to CISA's catalog. CyStack recommends that organizations and individual users apply patches as soon as possible.

CyStack does not yet have sufficient official-source data to identify the latest version of Modicon Controllers M241 / M251 and determine which vulnerabilities affect that version.