CVE-2017-16740: Rockwellautomation 1766-l32awa Firmware

Critical severity, CVSS 10.0. EPSS: 7.2% chance of exploitation in the next 30 days.

A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution.

Affected products

• Rockwellautomation 1766-l32awa Firmware: up to and including 21.002
• Rockwellautomation 1766-l32awaa Firmware: up to and including 21.002
• Rockwellautomation 1766-l32bwa Firmware: up to and including 21.002
• Rockwellautomation 1766-l32bwaa Firmware: up to and including 21.002
• Rockwellautomation 1766-l32bxb Firmware: up to and including 21.002
• Rockwellautomation 1766-l32bxba Firmware: up to and including 21.002

Published 2018-01-09. Last modified 2026-06-17.