Siemens SIMATIC S7-400 (Update A)

This updated advisory is a follow-up to the advisory update titled ICSA-21-104-12 Siemens SIMATIC S7-400 that was published April 14, 2022, to the ICS webpage on www.cisa.gov/ics. This advisory contains mitigations for an Uncontrolled Resource Consumption vulnerability in the Siemens SIMATIC S7-400.