October 25, 2026

CVE Watchtower

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CVE-2026-4769NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.8)
Published Date
Jul 13, 2026
Last Modified
Jul 13, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.45%Probability
Root Weakness (CWE)
CWE-912: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • WAGO 0765-110x/0100-0000 >= 1.0.0.0 and < 1.2.1.100
  • WAGO 0765-120x/0100-0000 >= 1.0.0.0 and < 1.2.7.100
  • WAGO 0765-150x/0100-0000 >= 1.0.0.0 and < 1.2.7.103
  • WAGO 0765-2101/0100-0000 >= 1.0.0.0 and < 1.2.1.102
  • WAGO 0765-2102/0100-0000 >= 1.0.0.0 and < 1.2.5.101
  • WAGO 0765-410x/0100-0000 >= 1.0.0.0 and < 1.2.1.100
  • WAGO 0765-420x/0100-0000 >= 1.0.0.0 and < 1.2.7.100
  • WAGO 0765-450x/0100-0000 >= 1.0.0.0 and < 1.2.7.103
Patched Versions
  • WAGO 0765-110x/0100-0000 1.2.1.100
  • WAGO 0765-120x/0100-0000 1.2.7.100
  • WAGO 0765-150x/0100-0000 1.2.7.103
  • WAGO 0765-2101/0100-0000 1.2.1.102
  • WAGO 0765-2102/0100-0000 1.2.5.101
  • WAGO 0765-410x/0100-0000 1.2.1.100
  • WAGO 0765-420x/0100-0000 1.2.7.100
  • WAGO 0765-450x/0100-0000 1.2.7.103
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References