CVE-2021-37471: Cradlepoint IBR600 Firmware

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

Cradlepoint IBR900-600 devices running versions < 7.21.10 are vulnerable to a restricted shell escape sequence that provides an attacker the capability to simultaneously deny availability to the device's NetCloud Manager console, local console and SSH command-line.

Affected products

• Cradlepoint IBR600 Firmware: before 7.21.0 (fixed in 7.21.0)
• Cradlepoint IBR600C Firmware: before 7.21.0 (fixed in 7.21.0)
• Cradlepoint IBR900 Firmware: before 7.21.0 (fixed in 7.21.0)

Published 2021-11-07. Last modified 2026-06-17.