CVE-2026-4769

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-13. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
EG Score
9.8(high)
EPSS
36.5%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 13, 2026

Advisory Details (1)

Auto-updated Jul 13, 2026
No patch confirmed yet.
generic

WAGO: Early-Boot Diagnostic Exposure in WAGO System I/O Field Devices

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

Vendor Advisories for CVE-2026-4769(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:25 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-17 04:04 UTCGHSA enrichment
  9. 2026-07-16 23:52 UTCGHSA enrichment
  10. 2026-07-16 19:42 UTCGHSA enrichment
  11. 2026-07-16 17:03 UTCEPSS rescore
  12. 2026-07-16 15:31 UTCGHSA enrichment
  13. 2026-07-16 11:13 UTCGHSA enrichment
  14. 2026-07-16 07:02 UTCGHSA enrichment
  15. 2026-07-16 02:51 UTCGHSA enrichment
  16. 2026-07-15 22:40 UTCGHSA enrichment
  17. 2026-07-15 18:29 UTCGHSA enrichment
  18. 2026-07-15 16:57 UTCEPSS rescore
  19. 2026-07-15 16:57 UTCEPSS rescore
  20. 2026-07-15 14:17 UTCGHSA enrichment
  21. 2026-07-15 10:04 UTCGHSA enrichment
  22. 2026-07-15 05:53 UTCGHSA enrichment
  23. 2026-07-15 02:00 UTCEPSS rescore
  24. 2026-07-15 02:00 UTCEPSS rescore
  25. 2026-07-15 01:38 UTCGHSA enrichment
Show 12 more
  1. 2026-07-14 21:27 UTCGHSA enrichment
  2. 2026-07-14 17:17 UTCGHSA enrichment
  3. 2026-07-14 13:03 UTCGHSA enrichment
  4. 2026-07-14 08:52 UTCGHSA enrichment
  5. 2026-07-14 04:40 UTCGHSA enrichment
  6. 2026-07-14 00:29 UTCGHSA enrichment
  7. 2026-07-13 22:31 UTCEPSS rescore
  8. 2026-07-13 20:18 UTCGHSA enrichment
  9. 2026-07-13 16:07 UTCGHSA enrichment
  10. 2026-07-13 11:53 UTCGHSA enrichment
  11. 2026-07-13 07:43 UTCEG score recompute
  12. 2026-07-13 07:42 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-4769?
CVE-2026-4769 is a critical vulnerability published on July 13, 2026. 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…
When was CVE-2026-4769 disclosed?
CVE-2026-4769 was first published in the National Vulnerability Database on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4769 actively exploited?
CVE-2026-4769 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-4769?
CVE-2026-4769 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-4769?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4769, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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