VULNERABILITY INTELLIGENCE

CVE-2020-24686

CVSS score7.5 HIGH

EPSS probability2.50%

CISA KEVNot currently listed

Published2021-02-26

Last modified2026-06-17

Description

The vulnerabilities can be exploited to cause the web visualization component of the PLC to stop and not respond, leading to genuine users losing remote visibility of the PLC state. If a user attempts to login to the PLC while this vulnerability is exploited, the PLC will show an error state and refuse connections to Automation Builder. The execution of the PLC application is not affected by this vulnerability. This issue affects ABB AC500 V2 products with onboard Ethernet.