CVE-2026-4769
CRITICALDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 36% of all known CVEs.
References
Related Vulnerabilities
Other CWE-912 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-20439 | Critical | 9.8 | 92% | KEV | Fix |
| CVE-2025-34117 | Unscored | - | 23% | - | - |
| CVE-2021-24867 | Critical | 9.8 | 19% | - | Fix |
| CVE-2024-6045 | High | 8.8 | 6.3% | - | - |
| CVE-2020-16204 | Critical | 9.8 | 5.5% | - | - |
| CVE-2010-20103 | Critical | 9.8 | 4.8% | - | - |
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-13.