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CVE-2012-6437

Rockwell Automation ControlLogix PLC Improper Authentication

Published: Jan 24, 2013Updated: Jun 3, 2026 Sources: CVE List NVD BDU csafCWE-287
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
9.6%
Top 5.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The device does not properly authenticate users and the potential exists for a remote user to upload a new firmware image to the Ethernet card, whether it is a corrupt or legitimate firmware image. Successful exploitation of this vulnerability could cause loss of availability, integrity, and confidentiality and a disruption in communications 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:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-287

Affected Products

1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modulesRockwell AutomationICS / OT / IoT
CompactLogix L32E and L35E controllersRockwell AutomationICS / OT / IoT
1788-ENBT FLEXLogix adapterRockwell AutomationICS / OT / IoT
1794-AENTR FLEX I/O EtherNet/IP adapterRockwell AutomationICS / OT / IoT
ControlLogix, CompactLogix, GuardLogix, and SoftLogixRockwell AutomationICS / OT / IoT
rockwell automationcommercialUSICS / OT / IoTaka arena®, arena simulation, armorstart st
and 38 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

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03
cisa.gov
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 13 more references View all →

Timeline

Published
Jan 24, 2013
Last Updated
Jun 3, 2026

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