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Public proof of concept

CVE-2018-20220

A public proof of concept exists; no exploitation attested.

  • Published2019-03-21
  • WeaknessCWE-306

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. While the web interface requires authentication before it can be interacted with, a large portion of the HTTP endpoints are missing authentication. An attacker is able to view these pages before being authenticated, and some of these pages may disclose sensitive information.

Timeline

dates in UTC
  1. 2019-02-22Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-20220?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-20220?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Teracue enc-400 hdmi firmwareversion to verify
BranchAffectedFixed in
2.56≤ 2.56no fix published
Teracue enc-400 hdmi2 firmwareversion to verify
BranchAffectedFixed in
2.56≤ 2.56no fix published
Teracue enc-400 hdsdi firmwareversion to verify
BranchAffectedFixed in
2.56≤ 2.56no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-46451
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-306read 2026-10-23
  • FIRST EPSSEPSS score15.4 %read 2026-11-02
  • Exploit-DBdetectionread 2026-11-02

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2019-03-21
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-20220?

An issue was discovered on Teracue ENC-400 devices with firmware 2.56 and below. While the web interface requires authentication before it can be interacted with, a large portion of the HTTP endpoints are missing authentication. An attacker is able to view these pages before being authenticated, and some of these pages may disclose sensitive information.

Is CVE-2018-20220 actively exploited?

Active exploitation of CVE-2018-20220 has not been confirmed. Its EPSS score was 15.4% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-20220?

CVE-2018-20220 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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