CVE-2017-7920: Abb VSN300 Firmware

High severity, CVSS 7.5. EPSS: 2.7% chance of exploitation in the next 30 days.

An Improper Authentication issue was discovered in ABB VSN300 WiFi Logger Card versions 1.8.15 and prior, and VSN300 WiFi Logger Card for React versions 2.1.3 and prior. By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to access internal information about status and connected devices without authenticating.

Affected products

• Abb VSN300 Firmware: up to and including 1.8.15
• Abb VSN300 For React Firmware: version 2.1.3 only

Published 2017-08-07. Last modified 2026-06-17.