CVE-2021-37471

Name: CVE-2021-37471
Creator: NVD / NIST
Published: 2021-11-07T16:15:07.73+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.16%

Last modified Jun 17, 2026

CVE-2021-37471 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.16% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.16%

63.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cradlepoint	Ibr600c Firmware	< 7.21.0
Cradlepoint	Ibr600 Firmware	< 7.21.0
Cradlepoint	Ibr900 Firmware	< 7.21.0

References

https://cradlepoint.com/product/endpoints/ibr900/Product, Vendor Advisory
https://securitybytes.me/posts/cve-2021-37471/Exploit, Third Party Advisory
https://cradlepoint.com/product/endpoints/ibr900/Product, Vendor Advisory
https://securitybytes.me/posts/cve-2021-37471/Exploit, Third Party Advisory

Timeline

Published: Nov 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37471?

How severe is CVE-2021-37471?

CVE-2021-37471 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.16% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37471?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37471?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST