What is CVE-2018-20218?

CVE-2018-20218 is a critical-severity vulnerability in Teracue Enc-400 Hdmi, classified under OS Command Injection. CVSS score: 9.8/10. Published 2019-03-21.

How severe is CVE-2018-20218?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Teracue Enc-400 Hdmi

CVE-2018-20218

An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. The login form passes user input directly to a shell command without any kind of escaping or validation in /usr/share/www/check.lp file. An attacker is able to perform command injection using the "password" parameter in the login form.

Vulnerability class: Command Injection (OS Command Injection)

Published 2019-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.107 (95.7th percentile), scored 2026-10-01.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.107 · newest: 0.107 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

seclists.org/fulldisclosure/2019/Feb/48 (Exploit, Mailing List, Third Party Advisory)
zxsecurity.co.nz/research.html (Not Applicable)

Frequently asked questions

What is CVE-2018-20218?: CVE-2018-20218 is a critical-severity vulnerability in Teracue Enc-400 Hdmi, classified under OS Command Injection. CVSS score: 9.8/10. Published 2019-03-21.
How severe is CVE-2018-20218?: Critical severity. CVSS v3 base score is 9.8 out of 10.