CVE-2020-12505: Wago 750-831 Firmware

High severity, CVSS 8.2. EPSS: 1.2% chance of exploitation in the next 30 days.

Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW07 allows an attacker to change some special parameters without authentication. This issue affects: WAGO 750-852, WAGO 750-880/xxx-xxx, WAGO 750-881, WAGO 750-831/xxx-xxx, WAGO 750-882, WAGO 750-885/xxx-xxx, WAGO 750-889 in versions FW07 and below.

Affected products

• Wago 750-831 Firmware: up to and including fw07
• Wago 750-852 Firmware: up to and including fw07
• Wago 750-880 Firmware: up to and including fw07
• Wago 750-881 Firmware: up to and including fw07
• Wago 750-882 Firmware: up to and including fw07
• Wago 750-885 Firmware: up to and including fw07
• Wago 750-889 Firmware: up to and including fw07

Published 2020-09-30. Last modified 2026-06-17.