Schneider Electric InduSoft Web Studio before 7.1.3.5 Patch 5 and Wonderware InTouch Machine Edition through 7.1 SP3 Patch 4 use cleartext for project-window password storage, which allows local users to obtain sensitive information by reading a file.
https://ics-cert.us-cert.gov/advisories/ICSA-15-211-01
https://gcsresource.invensys.com/support/docs/_securitybulletins/Security_bulletin_LFSEC00000110.pdf
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2015-100-01