CVE-2022-45138: WAGO: Missing Authentication for Critical Function

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% 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-306

Description

The configuration backend of the web-based management can be used by unauthenticated users, although only authenticated users should be able to use the API. The vulnerability allows an unauthenticated attacker to read and set several device parameters that can lead to full compromise of the device.

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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