CVE-2020-3920: Unisoon Ultralog Express Firmware

High severity, CVSS 8.1. EPSS: 0.8% chance of exploitation in the next 30 days.

UltraLog Express device management interface does not properly perform access authentication in some specific pages/functions. Any user can access the privileged page to manage accounts through specific system directory.

Affected products

• Unisoon Ultralog Express Firmware: version 1.4.0 only

Published 2020-03-27. Last modified 2026-06-17.