Rockwell Automation CompactLogix

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Summary

Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service condition.

The following versions of Rockwell Automation CompactLogix are affected:

  • CompactLogix 5370 L1
  • CompactLogix 5370 L2
  • CompactLogix 5370 L3
CVSS Vendor Equipment Vulnerabilities
v3 7.5 Rockwell Automation Rockwell Automation CompactLogix Improper Validation of Integrity Check Value, Exposure of Sensitive System Information to an Unauthorized Control Sphere

Background

  • Critical Infrastructure Sectors: Critical Manufacturing
  • Countries/Areas Deployed: Worldwide
  • Company Headquarters Location: United States

Vulnerabilities

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CVE-2025-11694

A security issue exists within 1769 CompactLogix controllers due to the missing validation of sequence numbers and source IP addresses in the CIP protocol. This allows attacker to abuse the exposed Connection ID’s visible on the web interface to perform denial-of-service attacks, resulting in a minor fault.

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Affected Products

Rockwell Automation CompactLogix
Vendor:
Rockwell Automation
Product Version:
Rockwell Automation CompactLogix 5370 L1: <V38.011, Rockwell Automation CompactLogix 5370 L2: <V38.011, Rockwell Automation CompactLogix 5370 L3: <V38.011
Product Status:
known_affected
Remediations

Mitigation
Rockwell Automation recommends users update to V38.011 https://compatibility.rockwellautomation.com/Pages/MultiProductFindDownloads.aspx?crumb=112&mode=3&refSoft=1&versions=55023,55024,55025,55026,55027,55061
https://compatibility.rockwellautomation.com/Pages/MultiProductFindDownloads.aspx?crumb=112&mode=3&refSoft=1&versions=55023,55024,55025,55026,55027,55061

Mitigation
For more information, please visit Rockwell Automations SD1776 https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1776.html
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1776.html

Relevant CWE: CWE-354 Improper Validation of Integrity Check Value


Metrics

CVSS Version Base Score Base Severity Vector String
3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 8.7 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVE-2026-9307

A sensitive information disclosure security issue exists within the affected CompactLogix controllers. The controller’s web server exposes CIP Connection IDs on the diagnostics webpage, which are accessible to any unauthenticated user on the network. This information can be leveraged by an attacker to construct malicious packets, leading to Denial-of-Service.

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Affected Products

Rockwell Au

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