CVE-2018-20162

Severity: critical (CVSS 9.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-03-21 · updated 2026-06-17
Weakness: CWE-20

Description

Digi TransPort LR54 4.4.0.26 and possible earlier devices have Improper Input Validation that allows users with 'super' CLI access privileges to bypass a restricted shell and execute arbitrary commands as root.

Affected products

Digi Transport Lr54 Firmware: before 4.4.0.26 — fixed in 4.4.0.26

How to fix

Upgrade to a fixed version: Digi Transport Lr54 Firmware 4.4.0.26. Check the vendor advisory for mitigations.

References

http://packetstormsecurity.com/files/151719/Digi-TransPort-LR54-Restricted-Shell-Escape.html
https://blog.hackeriet.no/cve-2018-20162-digi-lr54-restricted-shell-escape/
https://seclists.org/bugtraq/2019/Feb/34
http://packetstormsecurity.com/files/151719/Digi-TransPort-LR54-Restricted-Shell-Escape.html
https://blog.hackeriet.no/cve-2018-20162-digi-lr54-restricted-shell-escape/
https://seclists.org/bugtraq/2019/Feb/34

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