This updated advisory is a follow-up to the original advisory titled ICSA-21-280-04 Mitsubishi Electric MELSEC iQ-R Series C Controller Module (Update A) that was published October 28, 2021, to the ICS webpage on us-cert.cisa.gov. This advisory contains mitigations for an Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R Series C controller module products.

https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04