VIR Vulnerability Intelligence Relay

CVE-2012-6436

high
Published 2013-01-24 · Modified 2026-04-29
CVSS v3
—
CVSS v2
7.8
VIR risk
7.8

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

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Application impact
VendorProductVersionsFixed
rockwellautomationcontrollogix_controllers{"endIncluding":"20"}
rockwellautomationguardlogix_controllers{"endIncluding":"20"}
rockwellautomationmicrologix{"endIncluding":"1100"}
rockwellautomationsoftlogix_controllers{"endIncluding":"19"}

References

CWEs

CWE-119

Verify integrity in audit chain (admin only). AS-IS.