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Summary
Successful exploitation of this vulnerability could result in a denial-of-service condition.
The following versions of Rockwell Automation 432ES-IG3 Series A are affected:
- 432ES-IG3 Series A (CVE-2025-9368)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 7.5 | Rockwell Automation | Rockwell Automation 432ES-IG3 Series A | Allocation of Resources Without Limits or Throttling |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: United States
Vulnerabilities
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CVE-2025-9368
A security issue exists within 432ES-IG3 Series A, which affects GuardLink EtherNet/IP Interface, resulting in a denial-of-service condition. A manual power cycle is required to recover the device.
View CVE Details
Affected Products
Rockwell Automation 432ES-IG3 Series A
Rockwell Automation
Rockwell Automation 432ES-IG3 Series A: V1.001
known_affected
Remediations
Vendor fix
Rockwell Automation recommends users of 432ES-IG3 Series A update to V2.001.9 or later. The upgrade can be downloaded from the Rockwell Automation website.
Mitigation
Rockwell Automation users using the affected software, who are not able to upgrade to one of the corrected versions, should follow Rockwell Automation’s security best practices.
Mitigation
For more information, please review Rockwell Automation’s advisory.
Relevant CWE: CWE-770 Allocation of Resources Without Limits or Throttling
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 |
Acknowledgments
- Rockwell Automation reported this vulnerability to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.
Revision History
- Initial Release Date: 2026-01-13
| Date | Revision | Summary |
|---|---|---|
| 2026-01-13 | 1 | Initial Republication of Rockwell Automation advisory SD1764 |
