ARC Informatique PcVue prior to version 12.0.17 is vulnerable to information exposure, allowing unauthorized users to access session data of legitimate users. This issue also affects third-party systems based on the Web Services Toolkit.
ics-cert.kaspersky.com/advisories/klcert-advisories/2020/10/09/klcert-20-017-session-information-exposure-in-arc-informatique-pcvue/
us-cert.cisa.gov/ics/advisories/icsa-20-308-03
www.pcvuesolutions.com/security
www.pcvuesolutions.com/support/index.php/en/security-bulletin/1076-security-bulletin-2020-1