A vulnerability has been identified in SINUMERIK Edge (All versions < V3.2). The affected software does not properly validate the server certificate when initiating a TLS connection. This could allow an attacker to spoof a trusted entity by interfering in the communication path between the client and the intended server.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-42027
• https://cert-portal.siemens.com/productcert/pdf/ssa-523250.pdf