What’s Vulnerable › Vulnerabilities

CVE-2012-6442: Rockwell Automation ControlLogix PLC Improper Access Control

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 35.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-01-24 · updated 2026-06-16
• Weakness: CWE-284

Description

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: 19
• Rockwellautomation Compactlogix Firmware: 18
• Rockwellautomation Controllogix Controllers Firmware: 20
• Rockwellautomation Controllogix Firmware: 18
• Rockwellautomation Ethernet/Ip Firmware: all versions
• Rockwellautomation Flex I/O Ethernet/Ip Firmware: all versions
• Rockwellautomation Flexlogix Firmware: all versions
• Rockwellautomation Guardlogix Controllers Firmware: 20
• Rockwellautomation Guardlogix Firmware: 18
• Rockwellautomation Micrologix Firmware: all versions
• Rockwellautomation Softlogix Controllers Firmware: 19
• Rockwellautomation Softlogix Firmware: 18

References

• http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102
• https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154
• https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155
• https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156
• https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03
• https://tools.cisco.com/security/center/viewAlert.x?alertId=27862
• http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf

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