SIMATIC IPC RS-828A is affected by an authentication bypass vulnerability in the Redfish interface of its Baseboard Management Controller (BMC) that could allow an attacker to gain unauthorized access and compromise confidentiality, integrity and availability of the BMC and thus the entire system.
Siemens is preparing fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

https://cert-portal.siemens.com/productcert/html/ssa-446307.html