Fuji Electric has indicated that the vulnerabilities will not be fixed in Alpha5 SMART. Fuji Electric recommends users upgrade their systems to Alpha7 https://www.fujielectric.com/products/drives_inverters/servo/product_series/alpha7_overview.html .
For assistance, reach out directly to Fuji Electric's support team https://www.fujielectric.com/contact/ .
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An anonymous researcher working with Trend Micro's Zero Day Initiative reported this vulnerability to CISA