The security of our products is important to us as your industrial automation supplier. Multiple security issues were found internally during routine testing and are being reported based on our commitment to customer transparency and improvement of all business environments.
Product Description
The 1756-RM2 from Rockwell Automation is a high-speed, fiber-optic ControlLogix® Redundancy Module designed to enable seamless controller switchover ensuring fault-tolerant operation and system continuity in critical industrial environments.
Affected Products and Solution
Affected Product |
CVE |
Affected Firmware Version |
Corrected in Firmware Version |
Affected Catalog Numbers |
ControlLogix® Redundancy Enhanced Module |
CVE-2025-14027 |
All Versions |
Not Available |
Security Issue Details
Category |
Details |
CVE ID |
CVE-2025-14027 |
Impact |
Multiple denial-of-service vulnerabilities exist in the affected product. These issues can be triggered through various crafted inputs, including malformed Class 3 messages, memory leak conditions, and other resource exhaustion scenarios. Exploitation may cause the device to become unresponsive and, in some cases, result in a major nonrecoverable fault. Recovery may require a restart. |
CVSS 3.1 Base Score |
|
CVSS 4.0 Base Score |
|
CWE |
|
Known Exploited Vulnerability |
No (Not listed in KEV database) |
Mitigations and Workarounds
IMPORTANT NOTICE: Rockwell Automation Recommends customers upgrade from the 1756-RM2 to 1756-RM3. Customers using the affected product, who are not able to upgrade to 1756-RM3, should use our security best practices.
Revision History
Revision |
Date |
Description |
1.0 |
1/20/2026 |
Initial release |
Glossary:
· Redundancy Module: A hardware component used in high availability ControlLogix® systems. The redundancy module synchronizes a pair of controller chassis to allow seamless switchover in the event of a failure.
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Support
If you have any questions regarding the security issue(s) above and how to mitigate them, contact TechConnect for help. More information can be found at Contact Us | Rockwell Automation | US.
If you have any questions regarding this disclosure, please contact PSIRT
Email: rasecure@ra.rockwell.com
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