VulnerabilityAwaiting Analysis

CVE-2026-4769

During this window, an unauthenticated remote attacker can gain access to the internal system processes, resulting in full system compromise.

CRITICAL 9.3EPSS 0.76%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.76%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0: 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.76% probability · 53th percentile
CISA KEV: Not listed
Weakness: CWE-912
Source: info@cert.vde.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.