Shelly Pro 3EM

Summary

Vulnerabilities 1

• High 8.3
  CVE-2025-12056

  Out-of-bounds Read in Shelly Pro 3EM

  Out-of-bounds Read in Shelly Pro 3EM (before v1.4.4) allows Overread Buffers.

  Shelly Pro 3EM
  Nov 19, 2025

Revision history

1. 2025-11-18 #1

   Initial Publication

References

• ICSA Advisory ICSA-25-322-03 - Web Version
  https://www.cisa.gov/news-events/ics-advisories/icsa-25-322-03
• 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