CVE-2022-45139: WAGO: Origin validation error through CORS misconfiguration

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-02-27 · updated 2026-06-17
Weakness: CWE-346

Description

A CORS Misconfiguration in the web-based management allows a malicious third party webserver to misuse all basic information pages on the webserver. In combination with CVE-2022-45138 this could lead to disclosure of device information like CPU diagnostics. As there is just a limited amount of information readable the impact only affects a small subset of confidentiality.

Affected products

WAGO 751-9301 Firmware: from 16 before 22; 22, 23 — fixed in 22
WAGO 752-8303/8000-002 Firmware: from 18 before 22; 22, 23 — fixed in 22
WAGO Pfc100 Firmware: from 16 before 22; 22, 23 — fixed in 22
WAGO PFC200: from 16 before 22; 22, 23 — fixed in 22
WAGO Touch Panel 600 Advanced Firmware: from 16 before 22; 22, 23 — fixed in 22
WAGO Touch Panel 600 Marine Firmware: from 16 before 22; 22, 23 — fixed in 22
WAGO Touch Panel 600 Standard Firmware: from 16 before 22; 22, 23 — fixed in 22

How to fix

Upgrade to a fixed version: WAGO 751-9301 Firmware 22; WAGO 752-8303/8000-002 Firmware 22; WAGO Pfc100 Firmware 22; WAGO PFC200 22; WAGO Touch Panel 600 Advanced Firmware 22; WAGO Touch Panel 600 Marine Firmware 22; WAGO Touch Panel 600 Standard Firmware 22. Check the vendor advisory for mitigations.

References

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