CVE-2018-20401: Zoomtel 5352 Firmware

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

Zoom 5352 v5.5.8.6Y 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

• Zoomtel 5352 Firmware: version 5.5.8.6y only

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