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CVE-2012-6436 Details

Description

The device does not properly validate the data being sent to the buffer. An attacker can send a malformed CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP, which creates a buffer overflow and causes the CPU to crash. Successful exploitation of this vulnerability could cause loss of availability 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

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf	CVE	US Government Resource
http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102	[email protected]
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154	[email protected]
https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155	[email protected]
https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156	[email protected]
https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]

Affected Products

Product	Versions
rockwellautomation controllogix controllers	<= 20
CPE cpe:2.3:a:rockwellautomation:controllogix_controllers:::::::: Remediation No remediation found in references.
rockwellautomation guardlogix controllers	<= 20
CPE cpe:2.3:a:rockwellautomation:guardlogix_controllers:::::::: Remediation No remediation found in references.
rockwellautomation micrologix	<= 1100 <= 1400
CPE cpe:2.3:a:rockwellautomation:micrologix:::::::: Remediation No remediation found in references.
rockwellautomation softlogix controllers	<= 19
CPE cpe:2.3:a:rockwellautomation:softlogix_controllers:::::::: Remediation No remediation found in references.
rockwellautomation 1756-enbt	All versions
CPE cpe:2.3:h:rockwellautomation:1756-enbt:-:::::::* Remediation No remediation found in references.
rockwellautomation 1756-eweb	All versions
CPE cpe:2.3:h:rockwellautomation:1756-eweb:-:::::::* Remediation No remediation found in references.
rockwellautomation 1768-enbt	All versions
CPE cpe:2.3:h:rockwellautomation:1768-enbt:-:::::::* Remediation No remediation found in references.
rockwellautomation 1768-eweb	All versions
CPE cpe:2.3:h:rockwellautomation:1768-eweb:-:::::::* Remediation No remediation found in references.
rockwellautomation 1794-aentr flex i/o ethernet/ip adapter	All versions
CPE cpe:2.3:h:rockwellautomation:1794-aentr_flex_i/o_ethernet/ip_adapter:-:::::::* Remediation No remediation found in references.
rockwellautomation compactlogix	<= 18
CPE cpe:2.3:h:rockwellautomation:compactlogix:::::::: Remediation No remediation found in references.
rockwellautomation compactlogix controllers	<= 19
CPE cpe:2.3:h:rockwellautomation:compactlogix_controllers:::::::: Remediation No remediation found in references.
rockwellautomation compactlogix l32e controller	All versions
CPE cpe:2.3:h:rockwellautomation:compactlogix_l32e_controller:-:::::::* Remediation No remediation found in references.
rockwellautomation compactlogix l35e controller	All versions
CPE cpe:2.3:h:rockwellautomation:compactlogix_l35e_controller:-:::::::* Remediation No remediation found in references.
rockwellautomation controllogix	<= 18
CPE cpe:2.3:h:rockwellautomation:controllogix:::::::: Remediation No remediation found in references.
rockwellautomation flexlogix 1788-enbt adapter	All versions
CPE cpe:2.3:h:rockwellautomation:flexlogix_1788-enbt_adapter:-:::::::* Remediation No remediation found in references.
rockwellautomation guardlogix	<= 18
CPE cpe:2.3:h:rockwellautomation:guardlogix:::::::: Remediation No remediation found in references.
rockwellautomation softlogix	<= 18
CPE cpe:2.3:h:rockwellautomation:softlogix:::::::: Remediation No remediation found in references.

Change History

8 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	CISA-ADP
Jun 16, 2026	CVE Modified	[email protected]
Jun 3, 2026	CVE Modified	CISA-ADP
Apr 29, 2026	Status Change	[email protected]
Jun 30, 2025	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 25, 2013	Initial Analysis	[email protected]

CVE-2012-6436 Details

Description

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