Vulnerability Monitor

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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.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 8 products from technicolor, from technicolor, from technicolor and 5 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-12-23T21:29:01.153

Last Modified

2026-06-17T01:52:46.093

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-522

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	technicolor	dwg849_firmware	stc0.01.16	Yes
Hardware	technicolor	dwg849	1.0	No
Operating System	technicolor	dwg850-4_firmware	st9c.05.25	Yes
Hardware	technicolor	dwg850-4	2.1	No
Operating System	technicolor	dwg855_firmware	st80.20.26	Yes
Hardware	technicolor	dwg855	2.1	No
Operating System	technicolor	twg870_firmware	stb2.01.36	Yes
Hardware	technicolor	twg870	1.1	No

References

https://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv Third Party Advisory ([email protected])
https://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.html Exploit, Third Party Advisory ([email protected])
https://github.com/ezelf/sensitivesOids/blob/master/oidpassswordleaks.csv Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://misteralfa-hack.blogspot.com/2018/12/stringbleed-y-ahora-que-passwords-leaks.html Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For technicolor's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.