How severe is CVE-2018-20218?

CVE-2018-20218 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-20218 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20218?

CVE-2018-20218 primarily affects Teracue Enc-400 Hdmi Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-20218?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-20218 published?

CVE-2018-20218 was published on 2019-03-21 and last updated on 2026-06-17.

CVE-2018-20218

CVE-2018-20218 is a critical-severity vulnerability in Teracue Enc-400 Hdmi Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Teracue Enc-400 Hdmi Firmware
Published: 2019-03-21
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-20218?: CVE-2018-20218 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-20218 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20218?: CVE-2018-20218 primarily affects Teracue Enc-400 Hdmi Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-20218?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-20218 published?: CVE-2018-20218 was published on 2019-03-21 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:teracue:enc-400_hdmi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:teracue:enc-400_hdmi2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:teracue:enc-400_hdsdi_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Teracue Enc-400 Hdmi Firmware

CVE-2018-20219 — High (CVSS 8.1): An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. After successful authentication, the…
CVE-2018-20220 — High (CVSS 7.5): An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. While the web interface requires…

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