MicroLogix 1100 & 1400 Product Web Server Application Vulnerable to Denial-Of-Service Condition Attack

Description

Rockwell Automation was made aware that the webservers of the Micrologix 1100 and 1400 controllers contain a vulnerability that may lead to a denial-of-service condition. The security vulnerability could be exploited by an attacker with network access to the affected systems by sending TCP packets to webserver and closing it abruptly which would cause a denial-of-service condition for the web server application on the device

Scores

EPSS (exploitation in 30 days)

0.72% · top 46% of all CVEs (4 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• CWE-924 Improper Enforcement of Message Integrity During Transmission in a Communication Channel (opens in a new tab)All about CWE-924 and its CVEs

Affected products

• Rockwell Automation · MicroLogix 1100

  • affected All

• Rockwell Automation · MicroLogix 1400-B/C

  • affected 21.007 and below

• Rockwell Automation · MicroLogix 1400-A

  • affected 7.000 and below

References (1)

• https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1137678 (opens in a new tab)x_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-3166](https://trackcve.app/badge/CVE-2022-3166.svg)](https://trackcve.app/cve/CVE-2022-3166)

Record last updated 17 Apr 2025, 15:30 UTC.