CVE-2022-30264: Emerson DL8000 Firmware

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The Emerson ROC and FloBoss RTU product lines through 2022-05-02 perform insecure filesystem operations. They utilize the ROC protocol (4000/TCP, 5000/TCP) for communications between a master terminal and RTUs. Opcode 203 of this protocol allows a master terminal to transfer files to and from the flash filesystem and carrying out arbitrary file and directory read, write, and delete operations.

Affected products

• Emerson DL8000 Firmware: up to and including 2022-05-02
• Emerson FB3000 Rtu Firmware: up to and including 2022-05-02
• Emerson ROC800L Firmware: up to and including 2022-05-02
• Emerson ROC809 Firmware: before 2022-05-02 (fixed in 2022-05-02)
• Emerson ROC827 Firmware: before 2022-05-02 (fixed in 2022-05-02)

Published 2022-08-16. Last modified 2026-06-17.