Johnson Controls iSTAR

Summary

Vulnerabilities 1

• High 7.1
  CVE-2025-61736

  iSTAR- Improper Validation of Certificate Expiration

  Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.

  Johnson Controls iSTAReX, iSTAR Edge, iSTAR Ultra LT, iSTAR Ultra , iSTAR Ultra SE Browsers
  Dec 17, 2025

Revision history

1. 2025-12-04 #1

   Initial Publication

References

• ICSA Advisory ICSA-25-338-04 - Web Version
  https://www.cisa.gov/news-events/ics-advisories/icsa-25-338-04
• 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/uscert/sites/default/files/publications/emailscams0905.pdf
• Recommended Practices
  https://www.cisa.gov/uscert/ncas/tips/ST04-014
• 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