CVE-2023-3596: Rockwellautomation 1756-EN4TR Firmware

High severity, CVSS 7.5. EPSS: 3.7% chance of exploitation in the next 30 days.

Where this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication products, it could allow a malicious user to cause a denial of service by asserting the target system through maliciously crafted CIP messages.

Affected products

• Rockwellautomation 1756-EN4TR Firmware: affected versions not specified
• Rockwellautomation 1756-EN4TRK Firmware: affected versions not specified
• Rockwellautomation 1756-EN4TRXT Firmware: affected versions not specified

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