1783-NATR Memory Size Calculation Underflow Vulnerability
The security of our products is important to us as your industrial automation supplier. This security issue was found internally during routine testing and is being reported based on our commitment to customer transparency and improvement of all business environments. Please note Rockwell Automation could not confirm whether this vulnerability is exploitable; however, we are disclosing it in the interest of full transparency and proactive communication.
Product Description
1783-NATR is a configurable NAT router that simplifies machine integration into plant-wide networks by enabling 1:1 IP address translation, supporting Device Level Ring and linear topologies, and allowing configuration via web interface or Studio 5000 Add-on Profile.
Affected products and solution
Affected Product |
CVE |
Affected Software Version |
Corrected in Software Version |
Affected Catalog Numbers |
1783-NATR |
CVE-2020-28895 |
All Versions Prior to 1.007 |
1.007 |
Security Issue Details
Category |
Details |
CVE ID |
CVE-2020-28895 |
Impact |
In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption. |
CVSS 3.1 Base Score |
|
CVSS 4.0 Base Score |
|
CWEs |
|
Known Exploited Vulnerability |
No (Not listed in KEV database) |
Glossary:
· Wind River VxWorks: A trusted and widely deployed real-time operating system (RTOS) for mission-critical embedded systems. Used in all NATR modules.
Mitigations and Workarounds
Customers using the affected software, who are not able to upgrade to one of the corrected versions, should use our security best practices.
Revision History
Revision |
Date |
Description |
1.0 |
September 9, 2025 |
Initial release |
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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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