CVE-2019-6533: Kunbus PR100088 Modbus Gateway Firmware

Critical severity, CVSS 9.1. EPSS: 1.2% chance of exploitation in the next 30 days.

Registers used to store Modbus values can be read and written from the web interface without authentication in the PR100088 Modbus gateway versions prior to Release R02 (or Software Version 1.1.13166).

Affected products

• Kunbus PR100088 Modbus Gateway Firmware: before r02 (fixed in r02)

Published 2019-02-12. Last modified 2026-06-17.