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Vulnerability record · CVE-2018-20219 · published 21 March 2019

CVE-2018-20219: Teracue enc-400 hdmi firmware hard-coded credentials vulnerability

Teracue · Enc 400 Hdmi Firmware

An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. After successful authentication, the device sends an authentication cookie to the end user such that they can access the devices web administration panel. This token is hard-coded to a string in the source code (/usr/share/www/check.lp file). By setting this cookie in a browser, an attacker is able to maintain access to every ENC-400 device without knowing the password, which results in authentication bypass. Even if a user changes the password on the device, this token is static and unchanged.

8.1 CVSS 3.0 High EPSS 15% · top 3.5% CWE-798 · Hard-coded credentials
8.1CVSS 3.0 base score, v2 9.3
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. After successful authentication, the device sends an authentication cookie to the end user such that they can access the devices web administration panel. This token is hard-coded to a string in the source code (/usr/share/www/check.lp file). By setting this cookie in a browser, an attacker is able to maintain access to every ENC-400 device without knowing the password, which results in authentication bypass. Even if a user changes the password on the device, this token is static and unchanged.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/151802/Teracue-ENC-400-Command-Injection-Missing-Authentication.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/Feb/48 Mailing ListThird Party Advisory
https://zxsecurity.co.nz/research.html Not Applicable
http://packetstormsecurity.com/files/151802/Teracue-ENC-400-Command-Injection-Missing-Authentication.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2019/Feb/48 Mailing ListThird Party Advisory
https://zxsecurity.co.nz/research.html Not Applicable

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-20219), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.