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No exploitation reported

CVE-2018-20394

No exploitation reported by the sources we read.

  • Published2018-12-23
  • WeaknessCWE-522

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

Thomson DWG849 STC0.01.16, DWG850-4 ST9C.05.25, DWG855 ST80.20.26, and TWG870 STB2.01.36 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Timeline

dates in UTC
  1. 2018-12-2321:29CVE publishedNVD

Versions per branch

NVD
Technicolor dwg849 firmwareversion to verify
BranchAffectedFixed in
—= stc0.01.16no fix published
Technicolor dwg850-4 firmwareversion to verify
BranchAffectedFixed in
—= st9c.05.25no fix published
Technicolor dwg855 firmwareversion to verify
BranchAffectedFixed in
—= st80.20.26no fix published

1 more product in the sources.

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

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-12-23
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-rr82-jjmm-pjgj

Frequently asked questions

What is CVE-2018-20394?

Thomson DWG849 STC0.01.16, DWG850-4 ST9C.05.25, DWG855 ST80.20.26, and TWG870 STB2.01.36 devices allow remote attackers to discover credentials via iso.3.6.1.4.1.4491.2.4.1.1.6.1.1.0 and iso.3.6.1.4.1.4491.2.4.1.1.6.1.2.0 SNMP requests.

Is CVE-2018-20394 actively exploited?

Active exploitation of CVE-2018-20394 has not been confirmed. Its EPSS score was 1.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-20394?

CVE-2018-20394 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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