Schneider Electric StruxureWare SCADA Expert ClearSCADA 2010 R3 through 2014 R1 uses the MD5 algorithm for an X.509 certificate, which makes it easier for remote attackers to spoof servers via a cryptographic attack against this algorithm.
https://www.cisa.gov/news-events/ics-advisories/icsa-14-259-01a
https://ics-cert.us-cert.gov/advisories/ICSA-14-259-01
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2014/icsa-14-259-01a.json