SPIET800 and PNI800 Communication Modules Security Advisory

This advisory from ABB details multiple denial-of-service vulnerabilities (CVE-2021-22285, CVE-2021-22286, CVE-2021-22288) affecting the SPIET800 and PNI800 communication modules used in ABB Ability™ Symphony® Plus control systems. Exploitation requires network access and can cause the devices to become unresponsive, requiring a manual reboot; firmware updates are available to remediate the issues.