Siemens has released update V1.4.1 for SIMATIC CP 44x-1 RNA modules that resolves a
vulnerability that could allow unauthenticated users to perform administrative actions under certain conditions. Siemens recommends specific countermeasures until fixes can be applied.

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-126840.pdf