CVE-2022-27226: Irz RL01 Firmware

High severity, CVSS 8.8. EPSS: 33.7% chance of exploitation in the next 30 days.

A CSRF issue in /api/crontab on iRZ Mobile Routers through 2022-03-16 allows a threat actor to create a crontab entry in the router administration panel. The cronjob will consequently execute the entry on the threat actor's defined interval, leading to remote code execution, allowing the threat actor to gain filesystem access. In addition, if the router's default credentials aren't rotated or a threat actor discovers valid credentials, remote code execution can be achieved without user interaction.

Affected products

• Irz RL01 Firmware: up to and including 2022-03-16
• Irz RL21 Firmware: up to and including 2022-03-16
• Irz RU21 Firmware: up to and including 2022-03-16
• Irz RU21W Firmware: up to and including 2022-03-16
• Irz RU41 Firmware: up to and including 2022-03-16

Published 2022-03-19. Last modified 2026-06-17.