CVE-2012-6442

Name: CVE-2012-6442
Creator: NVD / NIST
Published: 2013-01-24T21:55:01.773+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 32.81%

Last modified Jun 16, 2026

CVE-2012-6442 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 32.81% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

32.81%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rockwellautomation	Ethernet\/Ip Firmware	All versions
Rockwellautomation	Compactlogix Firmware	All versions
Rockwellautomation	Flexlogix Firmware	All versions
Rockwellautomation	Flex I\/O Ethernet\/Ip Firmware	All versions
Rockwellautomation	Micrologix Firmware	All versions
Rockwellautomation	Compactlogix Controllers Firmware	19
Rockwellautomation	Compactlogix Firmware	18
Rockwellautomation	Controllogix Controllers Firmware	20
Rockwellautomation	Controllogix Firmware	18
Rockwellautomation	Guardlogix Controllers Firmware	20
Rockwellautomation	Guardlogix Firmware	18
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=27862Third Party Advisory
http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdfBroken Link, Third Party Advisory, US Government Resource

Timeline

Published: Jan 24, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-6442?

How severe is CVE-2012-6442?

CVE-2012-6442 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 32.81% probability of exploitation in the next 30 days.

How do I fix CVE-2012-6442?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-6442?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST