CVE-2021-34578 CRITICAL

CVE-2021-34578: WAGO: Authentication Vulnerability in Web-Based Management

Vendor Wago
Product PLC
Weakness CWE-287 · Improper authentication
Published August 31, 2021
Last update September 16, 2024
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by sending specifically constructed requests without authentication on multiple WAGO PLCs in firmware versions up to FW07.

Key dates

02Disclosure timeline

August 31, 2021 CVE published
September 16, 2024 Record updated