CVE-2023-3595: Rockwellautomation 1756-EN2F Series A Firmware

Critical severity, CVSS 9.8. EPSS: 5.5% chance of exploitation in the next 30 days.

Where this vulnerability exists in the Rockwell Automation 1756 EN2* and 1756 EN3* ControlLogix communication products, it could allow a malicious user to perform remote code execution with persistence on the target system through maliciously crafted CIP messages. This includes the ability to modify, deny, and exfiltrate data passing through the device.

Affected products

• Rockwellautomation 1756-EN2F Series A Firmware: affected versions not specified
• Rockwellautomation 1756-EN2F Series B Firmware: affected versions not specified
• Rockwellautomation 1756-EN2F Series C Firmware: affected versions not specified
• Rockwellautomation 1756-EN2T Series A Firmware: affected versions not specified
• Rockwellautomation 1756-EN2T Series B Firmware: affected versions not specified
• Rockwellautomation 1756-EN2T Series C Firmware: affected versions not specified
• Rockwellautomation 1756-EN2T Series D Firmware: affected versions not specified
• Rockwellautomation 1756-EN2TR Series A Firmware: affected versions not specified
• Rockwellautomation 1756-EN2TR Series B Firmware: affected versions not specified
• Rockwellautomation 1756-EN2TR Series C Firmware: affected versions not specified
• Rockwellautomation 1756-EN3TR Series A Firmware: affected versions not specified
• Rockwellautomation 1756-EN3TR Series B Firmware: affected versions not specified

Published 2023-07-12. Last modified 2026-06-17.