Rockwell Automation ISaGRAF Runtime Versions 4.x and 5.x searches for and loads DLLs as dynamic libraries. Uncontrolled loading of dynamic libraries could allow a local, unauthenticated attacker to execute arbitrary code. This vulnerability only affects ISaGRAF Runtime when running on Microsoft Windows systems.
https://www.cisa.gov/uscert/ics/advisories/icsa-20-280-01
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1131699
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-04