CVE-2012-6442: Rockwellautomation Compactlogix Controllers Firmware

High severity, CVSS 7.5. EPSS: 35.5% chance of exploitation in the next 30 days.

When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP that instructs the product to reset, a DoS can occur. This situation could cause loss of availability and a disruption of communication with other connected devices. Rockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400

Affected products

• Rockwellautomation Compactlogix Controllers Firmware: version 19 only
• Rockwellautomation Compactlogix Firmware: affected versions not specified; version 18 only
• Rockwellautomation Controllogix Controllers Firmware: version 20 only
• Rockwellautomation Controllogix Firmware: version 18 only
• Rockwellautomation Ethernet/ip Firmware: affected versions not specified
• Rockwellautomation Flex I/o Ethernet/ip Firmware: affected versions not specified
• Rockwellautomation Flexlogix Firmware: affected versions not specified
• Rockwellautomation Guardlogix Controllers Firmware: version 20 only
• Rockwellautomation Guardlogix Firmware: version 18 only
• Rockwellautomation Micrologix Firmware: affected versions not specified
• Rockwellautomation Softlogix Controllers Firmware: version 19 only
• Rockwellautomation Softlogix Firmware: version 18 only

Published 2013-01-24. Last modified 2026-06-16.