CVE-2026-4769

Certain devices in the WAGO System I/O Field series activate an internal diagnostic capability during the initial startup sequence. This functionality is not formally documented and becomes accessible without authentication for a brief period in the early boot phase. During this window, an unauthenticated remote attacker can gain access to the internal system processes, resulting in full system compromise.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.certvde.com/en/advisories/VDE-2026-031/

Configurations

No configuration.

History

13 Jul 2026, 08:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-13 08:16

Updated : 2026-07-13 19:58

NVD link : CVE-2026-4769

Mitre link : CVE-2026-4769

CVE.ORG link : CVE-2026-4769

JSON object : View

Products Affected

No product.

CWE

CWE-912

Hidden Functionality

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