{"id":"CVE-2026-4769","aliases":["EUVD-2026-43297","GHSA-2r6r-vgg5-p59v"],"status":"published","title":"Unauthenticated Access to Internal Diagnostic Interface","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.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00757,"percentile":0.55458,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-912"],"published":"2026-07-13T06:35:01Z","modified":"2026-07-13T19:58:29Z","products":[{"vendor":"wago","product":"0765-110x/0100-0000"},{"vendor":"wago","product":"0765-120x/0100-0000"},{"vendor":"wago","product":"0765-150x/0100-0000"},{"vendor":"wago","product":"0765-2101/0100-0000"},{"vendor":"wago","product":"0765-2102/0100-0000"},{"vendor":"wago","product":"0765-410x/0100-0000"},{"vendor":"wago","product":"0765-420x/0100-0000"},{"vendor":"wago","product":"0765-450x/0100-0000"}],"references":[{"url":"https://www.certvde.com/en/advisories/VDE-2026-031/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4769"},{"url":"https://www.certvde.com/en/advisories/VDE-2026-031"},{"url":"https://github.com/advisories/GHSA-2r6r-vgg5-p59v"}],"sources":{"cve":[{"id":"CVE-2026-4769","title":"Unauthenticated Access to Internal Diagnostic Interface","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.","status":"published","published":"2026-07-13T06:35:01.116Z","modified":"2026-07-13T14:44:48.962Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-912"],"updated_at":"2026-11-02T14:19:59.369956Z"}],"euvd":[{"id":"EUVD-2026-43297","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.","status":"published","published":"2026-07-13T06:35:01Z","modified":"2026-07-13T14:44:48Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T18:20:01.519776Z"}],"ghsa":[{"id":"GHSA-2r6r-vgg5-p59v","title":"Certain devices in the WAGO System I/O Field series activate an internal diagnostic capability...","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.","status":"published","published":"2026-07-13T09:31:42Z","modified":"2026-07-13T09:31:42Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-912"],"updated_at":"2026-11-02T15:09:24.680615Z"}],"nvd":[{"id":"CVE-2026-4769","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.","status":"published","published":"2026-07-13T08:16:21.343Z","modified":"2026-07-13T19:58:29.933Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-912"],"updated_at":"2026-11-02T14:12:28.771746Z"}]}}