Siemens User Management Component (UMC) before V2.11.2 is affected by multiple vulnerabilities where the most severe could lead to a restart of the UMC server.
Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens is preparing further updates and recommends specific countermeasures for products where updates are not, or not yet available.

https://cert-portal.siemens.com/productcert/html/ssa-999588.html