{"id":"CVE-2024-45368","aliases":["EUVD-2024-41448","GHSA-wxmv-3hm7-2jqh"],"status":"published","title":"AutomationDirect DirectLogic H2-DM1E Session Fixation","description":"The H2-DM1E PLC's authentication protocol appears to utilize either a custom encoding scheme or a challenge-response protocol. However, there's an observed anomaly in the H2-DM1E PLC's protocol execution, namely its acceptance of multiple distinct packets as valid authentication responses. This behavior deviates from standard security practices where a single, specific response or encoding pattern is expected for successful authentication.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00342,"percentile":0.27903,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-384"],"published":"2024-09-13T16:36:08Z","modified":"2026-06-17T07:54:05Z","products":[{"vendor":"automationdirect","product":"directlogic h2-dm1e"},{"vendor":"automationdirect","product":"h2-dm1e_firmware"}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-24-256-17"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45368"},{"url":"https://github.com/advisories/GHSA-wxmv-3hm7-2jqh"}],"sources":{"cve":[{"id":"CVE-2024-45368","title":"AutomationDirect DirectLogic H2-DM1E Session Fixation","description":"The H2-DM1E PLC's authentication protocol appears to utilize either a custom encoding scheme or a challenge-response protocol. However, there's an observed anomaly in the H2-DM1E PLC's protocol execution, namely its acceptance of multiple distinct packets as valid authentication responses. This behavior deviates from standard security practices where a single, specific response or encoding pattern is expected for successful authentication.","status":"published","published":"2024-09-13T16:36:08.941Z","modified":"2024-09-13T17:41:54.617Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:34:08.16279Z"}],"euvd":[{"id":"EUVD-2024-41448","description":"The H2-DM1E PLC's authentication protocol appears to utilize either a custom encoding scheme or a challenge-response protocol. However, there's an observed anomaly in the H2-DM1E PLC's protocol execution, namely its acceptance of multiple distinct packets as valid authentication responses. This behavior deviates from standard security practices where a single, specific response or encoding pattern is expected for successful authentication.","status":"published","published":"2024-09-13T16:36:08Z","modified":"2024-09-13T17:41:54Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-03T00:55:55.467153Z"}],"ghsa":[{"id":"GHSA-wxmv-3hm7-2jqh","title":"The H2-DM1E PLC's authentication protocol appears to utilize either a custom encoding scheme or a...","description":"The H2-DM1E PLC's authentication protocol appears to utilize either a custom encoding scheme or a challenge-response protocol. However, there's an observed anomaly in the H2-DM1E PLC's protocol execution, namely its acceptance of multiple distinct packets as valid authentication responses. This behavior deviates from standard security practices where a single, specific response or encoding pattern is expected for successful authentication.","status":"published","published":"2024-09-13T18:31:48Z","modified":"2024-09-13T18:31:56Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/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":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:58:15.804018Z"}],"nvd":[{"id":"CVE-2024-45368","description":"The H2-DM1E PLC's authentication protocol appears to utilize either a custom encoding scheme or a challenge-response protocol. However, there's an observed anomaly in the H2-DM1E PLC's protocol execution, namely its acceptance of multiple distinct packets as valid authentication responses. This behavior deviates from standard security practices where a single, specific response or encoding pattern is expected for successful authentication.","status":"published","published":"2024-09-13T17:15:12.8Z","modified":"2026-06-17T07:54:05.42Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/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":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:10:26.717759Z"}]}}