Siemens SIMATIC S7-300 and S7-400 CPUs (Update A)

2020-10-13 14:15:30 UTC

This updated advisory is a follow-up to the original advisory titled ICSA-20-252-02 Siemens SIMATIC S7-300 and S7-400 CPUs that was published September 8, 2020, to the ICS webpage on us-cert.gov. This advisory contains mitigations for an Insufficiently Protected Credentials vulnerability in Siemens SIMATIC S7-300 and S7-400 CPUs.