CVE-2022-46670: Rockwell Automation MicroLogix 1100 & 1400 Vulnerable to Cross-Site Scripting Attack

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-16 · updated 2026-06-17
Weakness: CWE-79

Description

Rockwell Automation was made aware of a vulnerability by a security researcher from Georgia Institute of Technology that the MicroLogix 1100 and 1400 controllers contain a vulnerability that may give an attacker the ability to accomplish remote code execution. The vulnerability is an unauthenticated stored cross-site scripting vulnerability in the embedded webserver. The payload is transferred to the controller over SNMP and is rendered on the homepage of the embedded website.

Affected products

Rockwell Automation MicroLogix 1100: all versions
Rockwellautomation Micrologix 1400-A Firmware: through 7.000
Rockwellautomation Micrologix 1400-B Firmware: through 21.007
Rockwellautomation Micrologix 1400-C Firmware: through 21.007
Rockwell Automation MicroLogix 1400: all versions

References

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