# CVE-2026-4769

## Summary

- **CVE ID:** CVE-2026-4769
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-912
- **Published:** Jul 13, 2026
- **Last Modified:** Jul 13, 2026

## 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.

## Affected Products

- WAGO — 0765-110x/0100-0000 (1.0.0.0)
- WAGO — 0765-120x/0100-0000 (1.0.0.0)
- WAGO — 0765-150x/0100-0000 (1.0.0.0)
- WAGO — 0765-2101/0100-0000 (1.0.0.0)
- WAGO — 0765-2102/0100-0000 (1.0.0.0)
- WAGO — 0765-410x/0100-0000 (1.0.0.0)
- WAGO — 0765-420x/0100-0000 (1.0.0.0)
- WAGO — 0765-450x/0100-0000 (1.0.0.0)

## References

- [CNA](https://www.certvde.com/en/advisories/VDE-2026-031/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.76%
- **EPSS Percentile:** 53.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._