Rockwell MicroLogix Incorrect Permission Assignment for Critical Resource (CVE-2016-9338)

low Tenable OT Security Plugin ID 500230


The remote OT asset is affected by a vulnerability.


An issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 controller 1763-L16AWA, Series A and B, Version 14.000 and prior versions; 1763-L16BBB, Series A and B, Version 14.000 and prior versions; 1763-L16BWA, Series A and B, Version 14.000 and prior versions; and 1763-L16DWD, Series A and B, Version 14.000 and prior versions. Because of an Incorrect Permission Assignment for Critical Resource, users with administrator privileges may be able to remove all administrative users requiring a factory reset to restore ancillary web server function. Exploitation of this vulnerability will still allow the affected device to function in its capacity as a controller.

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Refer to the vendor advisory.

See Also

Plugin Details

Severity: Low

ID: 500230

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 11/30/2023

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 1.4


Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2016-9338


Risk Factor: Low

Base Score: 2.7

Temporal Score: 2.4

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

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

Vulnerability Information

CPE: cpe:/a:rockwellautomation:1763-l16awa_series_a, cpe:/a:rockwellautomation:1763-l16bwa_series_b, cpe:/a:rockwellautomation:1766-l32bwaa_series_a, cpe:/a:rockwellautomation:1766-l32bwaa_series_b, cpe:/a:rockwellautomation:1766-l32bwa_series_a, cpe:/a:rockwellautomation:1766-l32bwa_series_b, cpe:/a:rockwellautomation:1766-l32bxba_series_b, cpe:/a:rockwellautomation:1766-l32bxb_series_b, cpe:/a:rockwellautomation:1766-l32awa_series_a, cpe:/a:rockwellautomation:1763-l16awa_series_b, cpe:/a:rockwellautomation:1763-l16bwa_series_a, cpe:/a:rockwellautomation:1766-l32awaa_series_a, cpe:/a:rockwellautomation:1766-l32awaa_series_b, cpe:/a:rockwellautomation:1763-l16bbb_series_b, cpe:/a:rockwellautomation:1763-l16bbb_series_a, cpe:/a:rockwellautomation:1763-l16dwd_series_b, cpe:/a:rockwellautomation:1763-l16dwd_series_a, cpe:/a:rockwellautomation:1766-l32bxba_series_a, cpe:/a:rockwellautomation:1766-l32bxb_series_a, cpe:/a:rockwellautomation:1766-l32awa_series_b

Required KB Items: Tenable.ot/Rockwell

Exploit Ease: No known exploits are available

Patch Publication Date: 2/13/2017

Vulnerability Publication Date: 2/13/2017

Reference Information

CVE: CVE-2016-9338