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CVE-2012-6435

Rockwell Automation ControlLogix PLC Improper Access Control

Published: Jan 24, 2013Updated: Jun 3, 2026 Sources: CVE List NVD csafCWE-284
NVD MITRE
7.5CVSSHIGH
EPSS Score
41.9%
Top 1.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 CPU to stop logic execution and enter a fault state, 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

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-284CWE-399

Affected Products

controllogix controllersrockwellautomationICS / OT / IoT
guardlogix controllersrockwellautomationICS / OT / IoT
micrologixrockwellautomationICS / OT / IoT
softlogix controllersrockwellautomationICS / OT / IoT
1756-enbtrockwellautomationICS / OT / IoT
rockwellautomationcommercialUSICS / OT / IoTaka rockwell automation
and 20 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

References

http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102
rockwellautomation.custhelp.com
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154
rockwellautomation.custhelp.com
https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155
rockwellautomation.custhelp.com
and 12 more references View all →

Timeline

Published
Jan 24, 2013
Last Updated
Jun 3, 2026

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