Universal Boot Loader (U-Boot) (Update A)

Summary

Vulnerabilities 1

• High 7.6
  CVE-2025-24857

  Improper access control for volatile memory containing boot code in Universal Boot Loader (U-Boot) before 2017.11 and Q…

  u-boot boot Debian Ubuntu
  Dec 10, 2025

Revision history

1. 2026-03-05 #2

   Update A - Added Johnson Controls Airwall AW-75 to the affected products and mitigations

2. 2025-12-09 #1

   Initial Publication

References

• ICSA Advisory ICSA-25-343-01 - Web Version
  https://www.cisa.gov/news-events/ics-advisories/icsa-25-343-01
• 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