CVE-2017-12089: Rockwellautomation Micrologix 1400 B Firmware

High severity, CVSS 7.5. EPSS: 4.8% chance of exploitation in the next 30 days.

An exploitable denial of service vulnerability exists in the program download functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before. A specially crafted packet can cause a device fault resulting in halted operations. An attacker can send an unauthenticated packet to trigger this vulnerability.

Affected products

• Rockwellautomation Micrologix 1400 B Firmware: up to and including 21.2

Published 2018-04-05. Last modified 2026-06-17.