CVE-2021-37188: Digi Transport DR64 Firmware

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Digi Transport DR64 Firmware: up to and including 5.2.4.9; affected versions not specified
• Digi Transport VC74 Firmware: up to and including 5.2.4.9
• Digi Transport WR11 Firmware: up to and including 8.2.1.3
• Digi Transport WR11 Xt Firmware: up to and including 8.2.1.3
• Digi Transport WR21 Firmware: up to and including 8.2.1.3
• Digi Transport WR31 Firmware: up to and including 8.2.1.3
• Digi Transport WR41 Firmware: from 5.0.0.0, up to and including 5.2.4.6; from 6.0.0.0, up to and including 6.1.3.5; from 8.0.0.0, up to and including 8.3.1.2
• Digi Transport WR44 Firmware: up to and including 8.3.1.2

Published 2021-12-10. Last modified 2026-06-17.