CVE-2026-4769
Boot-time unauthenticated diagnostic allows brief remote access and full device compromise.
Is CVE-2026-4769 being exploited?
Not confirmed. CVE-2026-4769 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.76% probability of exploitation in the next 30 days.
How severe is CVE-2026-4769?
CVE-2026-4769 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-4769?
Yes. A fix has been recorded for CVE-2026-4769. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-4769 affect?
CVE-2026-4769 affects WAGO System I/O Field series devices. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-4769?
Isolate devices, block remote access, enforce network segmentation, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote access during early boot to internal processes enabling full system compromise, arbitrary code execution, firmware tampering, and operational disruption.
Immediate action required
- affected>= 1.0.0.0 and < 1.2.1.100
- affected>= 1.0.0.0 and < 1.2.7.100
- affected>= 1.0.0.0 and < 1.2.7.103
- affected>= 1.0.0.0 and < 1.2.1.102
- affected>= 1.0.0.0 and < 1.2.5.101
- affected>= 1.0.0.0 and < 1.2.1.100
- affected>= 1.0.0.0 and < 1.2.7.100
- affected>= 1.0.0.0 and < 1.2.7.103
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.