CVE-2018-20394: Technicolor DWG849 Firmware

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

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.

Affected products

• Technicolor DWG849 Firmware: version stc0.01.16 only
• Technicolor DWG850-4 Firmware: version st9c.05.25 only
• Technicolor DWG855 Firmware: version st80.20.26 only
• Technicolor TWG870 Firmware: version stb2.01.36 only

Published 2018-12-23. Last modified 2026-06-17.