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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database

Vulnerability Change Records for CVE-2012-6436

Change History

CVE Modified by ICS-CERT 6/30/2025 6:15:28 PM

Action Type Old Value New Value
Changed Description 
Buffer overflow in 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 allows remote attackers to cause a denial of service (CPU crash and communication outage) via a malformed CIP packet.
 
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
Added CVSS V2 

								
							
							
								
							
						
								
							
								
(AV:N/AC:L/Au:N/C:N/I:N/A:C)

								
								
					

					

						Added
						CWE
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
CWE-119

								
								
					

					

						Added
						Reference
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102

								
								
					

					

						Added
						Reference
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154

								
								
					

					

						Added
						Reference
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155

								
								
					

					

						Added
						Reference
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156

								
								
					

					

						Added
						Reference
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03

								
								
					

					

						Removed
						Reference
						
							
							
								
							
								
http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf

								
							
							
								
							
						
								
							
								

								
								
					

					

						Removed
						Reference Type
						
							
							
								
							
								
http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf Types: US Government Resource