CVE-2021-37188

Name: CVE-2021-37188
Creator: NVD / NIST
Published: 2021-12-10T13:15:07.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2021-37188 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered on Digi TransPort devices through 2021-07-21. An authenticated attacker may load customized firmware (because the bootloader does not verify that it is authentic), changing the behavior of the gateway.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

An issue was discovered on Digi TransPort devices through 2021-07-21. An authenticated attacker may load customized firmware (because the bootloader does not verify that it is authentic), changing the behavior of the gateway.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.46%

36.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-345

Affected Software

Vendor	Product	Versions
Digi	Transport Dr64 Firmware	<= 5.2.4.9
Digi	Transport Dr64 Firmware	All versions
Digi	Transport Vc74 Firmware	<= 5.2.4.9
Digi	Transport Wr11 Firmware	<= 8.2.1.3
Digi	Transport Wr11 Xt Firmware	<= 8.2.1.3
Digi	Transport Wr21 Firmware	<= 8.2.1.3
Digi	Transport Wr31 Firmware	<= 8.2.1.3
Digi	Transport Wr41 Firmware	>= 5.0.0.0, <= 5.2.4.6
Digi	Transport Wr41 Firmware	>= 6.0.0.0, <= 6.1.3.5
Digi	Transport Wr41 Firmware	>= 8.0.0.0, <= 8.3.1.2
Digi	Transport Wr44 Firmware	<= 8.3.1.2

References

https://raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-04.txtThird Party Advisory
https://www.digi.com/search/results?q=transportVendor Advisory
https://raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-04.txtThird Party Advisory
https://www.digi.com/search/results?q=transportVendor Advisory

Timeline

Published: Dec 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37188?

How severe is CVE-2021-37188?

CVE-2021-37188 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37188?

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-2021-37188?

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

Scan your code now

Source: NVD / NIST