CVE-2020-24679: Abb Symphony + Historian

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.

Affected products

• Abb Symphony + Historian: version 3.0 only; version 3.1 only
• Abb Symphony + Operations: version 1.1 only; version 2.0 only; version 2.1 only; version 3.0 only; version 3.1 only; version 3.2 only; …

Published 2020-12-22. Last modified 2026-06-17.