{"id":"CVE-2026-4769","title":"Certain devices in the WAGO System I/O Field series activate an internal diagnostic capability during the initial startup sequence","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 p…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-912"],"published":"2026-07-13","updated":"2026-07-13","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-4769","references":[{"url":"https://www.certvde.com/en/advisories/VDE-2026-031/","label":"info@cert.vde.com"}],"tags":["nvd"],"ingestedAt":"2026-07-13T11:26:50.764Z","epss":0.00757,"epssPercentile":0.53243,"slug":"CVE-2026-4769","body":"## Overview\n\nCertain 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}