Rockwell ControlLogix controllers Buffer Overflow (CVE-2012-6436)

high Tenable OT Security Plugin ID 500036


The remote OT asset is affected by a vulnerability.


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; allows remote attackers to cause a denial of service (CPU crash and communication outage) via a malformed CIP packet.

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Refer to the vendor advisory.

See Also

Plugin Details

Severity: High

ID: 500036

Version: 1.9

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 12/26/2023

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2012-6436


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/h:rockwellautomation:1768-enbt:-, cpe:/h:rockwellautomation:1768-eweb:-, cpe:/h:rockwellautomation:1788-enbt_adapter:-, cpe:/h:rockwellautomation:1794-aentr_flex_i%2fo_ethernet%2fip_adapter:-, cpe:/h:rockwellautomation:compactlogix_l32e_controller:-, cpe:/h:rockwellautomation:compactlogix_l35e_controller:-, cpe:/h:rockwellautomation:1756-enbt:-, cpe:/h:rockwellautomation:1756-eweb:-

Required KB Items: Tenable.ot/Rockwell

Exploit Ease: No known exploits are available

Patch Publication Date: 1/24/2013

Vulnerability Publication Date: 1/24/2013

Reference Information

CVE: CVE-2012-6436

CWE: 119