The NCCIC has published an advisory on improper input validation and cryptographic issues vulnerabilities in Siemens SIMATIC RF6XXR. All versions prior to 3.2.1 of RF615R and RF68XR are affected Successful exploitation of these vulnerabilities could allow access to sensitive information. Siemens recommends users upgrade to Version 3.2.1 or newer for both affected products and restrict network access to the device. The NCCIC also advises of a series of measures for mitigating the vulnerabilities. Read the advisory at CISA.