CVE-2012-6436
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
Key facts
- CVSS score
- 7.5 (v3.1)
- Severity
- HIGH
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
- CWE-119
- EPSS score
- 35.2% (98th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-6289)
- Published
- January 24, 2013
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-6289 in the EU Vulnerability Database. Last updated in EUVD on June 3, 2026.
View on the EU Vulnerability DatabaseAffected products
- rockwellautomation / 1756-enbt
- rockwellautomation / 1756-eweb
- rockwellautomation / 1768-enbt
- rockwellautomation / 1768-eweb
- rockwellautomation / 1794-aentr flex i/o ethernet/ip adapter
- rockwellautomation / compactlogix
- rockwellautomation / compactlogix controllers
- rockwellautomation / compactlogix l32e controller
- rockwellautomation / compactlogix l35e controller
- rockwellautomation / controllogix
- rockwellautomation / controllogix controllers
- rockwellautomation / flexlogix 1788-enbt adapter
- rockwellautomation / guardlogix
- rockwellautomation / guardlogix controllers
- rockwellautomation / micrologix
- rockwellautomation / softlogix
- rockwellautomation / softlogix controllers
References
- http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102
- http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf(US Government Resource)
- 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
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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