Vulnerabilities > CVE-2021-22659 - Unspecified vulnerability in Rockwellautomation Micrologix 1400 Firmware 21.0/21.6

Summary

Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user.

Vulnerable Configurations

References