CVE-2026-4769 Details
Description
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.
A vulnerability exists in certain WAGO System I/O Field devices that allows unauthenticated remote access to internal system processes during a brief window in the early startup phase. This access, which is not documented and available only for a short time, can lead to a full system compromise by exploiting the internal diagnostic capabilities activated at startup.
Users are advised to update to the latest firmware versions. The specific fixed versions can be found in the WAGO advisory VDE-2026-031.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.certvde.com/en/advisories/VDE-2026-031/ | [email protected] |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-912 | Hidden Functionality | [email protected] |
Affected Products
No affected product data is available for this CVE.
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 13, 2026 | CVE Modified | CISA-ADP |
| Jul 13, 2026 | New CVE Received | [email protected] |