The IEC870IP driver for AVEVA’s Vijeo Citect and Citect SCADA and Schneider Electric’s Power SCADA Operation has a buffer overflow vulnerability that could result in a server-side crash.
https://www.us-cert.gov/ics/advisories/icsa-19-290-01
https://sw.aveva.com/hubfs/assets-2018/pdf/security-bulletin/SecurityBulletin_LFSec139.pdf