CVE-2018-20394

CRITICALNVD 9.89.8—Trending — 3 sources updated this week

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 71.0%
KEV: Not listed

Published

December 23, 2018

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv
cve@mitrehttps://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv
af854a3a-2127-422b-91ae-364da2661108https://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-522Insufficiently Protected Credentials

Data Freshness Timeline

(refreshed 12× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 00:01 UTCEG score recompute
2026-05-28 00:01 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-20394?

CVE-2018-20394 is a critical vulnerability published on December 23, 2018. 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.

When was CVE-2018-20394 disclosed?

CVE-2018-20394 was first published in the National Vulnerability Database on December 23, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-20394 actively exploited?

CVE-2018-20394 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 71.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

CVE-2018-20394 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-20394?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20394, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-20394

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20394?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)