Rockwellautomation Micrologix Channel Accessible by Non-Endpoint

high Tenable.ot Plugin ID 500456
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When an authenticated password change request takes place, this vulnerability could allow the attacker to intercept the message that includes the legitimate, new password hash and replace it with an illegitimate hash. The user would no longer be able to authenticate to the controller (Micro800: All versions, MicroLogix 1400: Version 21 and later) causing a denial-of-service condition


Refer to vendor advisory for Security Updates

See Also

Plugin Details

Severity: High

ID: 500456

Version: 1.0

Type: local

Family: SCADA

Published: 8/10/2021

Updated: 8/10/2021

Risk Information

CVSS Score Source: CVE-2021-32926


Risk Factor: Medium

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P


Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:2.3:o:rockwellautomation:micrologix_1400_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:rockwellautomation:micro800_firmware:*:*:*:*:*:*:*:*

Patch Publication Date: 6/3/2021

Vulnerability Publication Date: 6/3/2021

Reference Information

CVE: CVE-2021-32926