Rockwell Automation 432ES-IG3 Series A

Summary

Vulnerabilities 1

• High 8.7
  CVE-2025-9368

  432ES-IG3 Series A Denial-of-Service Vulnerability

  A security issue exists within 432ES-IG3 Series A, which affects GuardLink® EtherNet/IP Interface, resulting in denial-of-service. A manual power cycle is required to recover the device.

  Rockwell Automation 432ES-IG3 Series A ICS / OT
  Dec 9, 2025

Revision history

1. 2026-01-13 #1

   Initial Republication of Rockwell Automation advisory SD1764

References

• ICSA Advisory ICSA-26-013-01 - Web Version
  https://www.cisa.gov/news-events/ics-advisories/icsa-26-013-01
• Recommended Practices
  https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
• Recommended Practices
  https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
• Recommended Practices
  https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
• Recommended Practices
  https://www.cisa.gov/topics/industrial-control-systems
• Recommended Practices
  https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01
• Recommended Practices
  https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
• Recommended Practices
  https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b
• Recommended Practices
  https://www.cisa.gov/secure-our-world/teach-employees-avoid-phishing
• Recommended Practices
  https://www.cisa.gov/news-events/news/avoiding-social-engineering-and-phishing-attacks