Delta Electronics COMMGR (Update A)

Summary

Vulnerabilities 1

• Critical 9.8
  CVE-2025-3495

  COMMGR - Insufficient Randomization Authentication Bypass

  Delta Electronics COMMGR v1 and v2 uses insufficiently randomized values to generate session IDs (CWE-338). An attacker could easily brute force a session ID and load and execute arbitrary code.

  Delta Electronics COMMGR ICS / OT
  Apr 16, 2025

Revision history

1. 2025-09-04 #2

   Update A - Update to mitigation section and affected versions

2. 2025-04-15 #1

   Initial Publication

References

• ICSA Advisory ICSA-25-105-07 - Web Version
  https://www.cisa.gov/news-events/ics-advisories/icsa-25-105-07
• 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/ics/alerts/ICS-ALERT-10-301-01
• Recommended Practices
  https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
• Recommended Practices
  https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
• Recommended Practices
  https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf
• Recommended Practices
  https://www.cisa.gov/uscert/ncas/tips/ST04-014