CVE-2023-23594: Sato-Global CL4NX Plus Firmware

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

An authentication bypass vulnerability in the web client interface for the CL4NX printer before firmware version 1.13.3-u724_r2 provides remote unauthenticated attackers with access to execute commands intended only for valid/authenticated users, such as file uploads and configuration changes.

Affected products

• Sato-Global CL4NX Plus Firmware: before 1.13.3-u724_r2 (fixed in 1.13.3-u724_r2)

Published 2023-03-31. Last modified 2026-06-17.