Due to inadequate code logic, a previously unauthenticated threat actor could potentially obtain a local Windows OS user token through the FactoryTalk® Services Platform web service and then use the token to log in into FactoryTalk® Services Platform . This vulnerability can only be exploited if the authorized user did not previously log in into the FactoryTalk® Services Platform web service.
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1672.html
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1141165