{"id":"CVE-2026-41020","aliases":["EUVD-2026-110808","GHSA-4r7w-hmfv-2648"],"status":"published","title":"Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated...","description":"Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated attacker with access to captured authentication traffic to replay a valid authentication exchange and gain unauthorized access to the device.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00226,"percentile":0.13477,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-294"],"published":"2026-10-27T11:05:51Z","modified":"2026-11-04T20:29:24Z","products":[{"vendor":"eaton","product":"easye4"}],"references":[{"url":"https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/eaton-va-2026-1017.pdf","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41020"},{"url":"https://github.com/advisories/GHSA-4r7w-hmfv-2648"}],"sources":{"cve":[{"id":"CVE-2026-41020","description":"Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated attacker with access to captured authentication traffic to replay a valid authentication exchange and gain unauthorized access to the device.","status":"published","published":"2026-10-27T11:05:51.545Z","modified":"2026-11-04T20:29:24.866Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-294"],"updated_at":"2026-11-04T21:42:22.640148Z"}],"euvd":[{"id":"EUVD-2026-110808","description":"Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated attacker with access to captured authentication traffic to replay a valid authentication exchange and gain unauthorized access to the device.","status":"published","published":"2026-10-27T11:05:51Z","modified":"2026-11-04T20:29:24Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-04T21:45:43.843698Z"}],"ghsa":[{"id":"GHSA-4r7w-hmfv-2648","title":"Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated...","description":"Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated attacker with access to captured authentication traffic to replay a valid authentication exchange and gain unauthorized access to the device.","status":"published","published":"2026-10-27T12:30:57Z","modified":"2026-10-27T12:31:01Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-294"],"updated_at":"2026-11-02T15:14:29.466605Z"}],"nvd":[{"id":"CVE-2026-41020","description":"Eaton easyE4 uses a static nonce during authentication, which could allow an unauthenticated attacker with access to captured authentication traffic to replay a valid authentication exchange and gain unauthorized access to the device.","status":"published","published":"2026-10-27T12:17:07.67Z","modified":"2026-11-04T21:18:13.523Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-294"],"updated_at":"2026-11-04T23:43:41.997511Z"}]}}