{"id":"CVE-2021-40396","aliases":["EUVD-2021-27573","GHSA-3x57-7r9m-7xwv"],"status":"published","title":"A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1...","description":"A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1.1.7. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00365,"percentile":0.30605,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-276"],"published":"2022-01-28T19:09:28Z","modified":"2026-06-17T04:06:51Z","products":[{"vendor":"advantech","product":"deviceon\\/iservice"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1408","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40396"},{"url":"https://github.com/advisories/GHSA-3x57-7r9m-7xwv"}],"sources":{"cve":[{"id":"CVE-2021-40396","description":"A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1.1.7. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2022-01-28T19:09:28Z","modified":"2025-04-15T19:22:27.423Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-27573","description":"A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1.1.7. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2022-01-28T19:09:28Z","modified":"2025-04-15T19:22:27Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:26.346189Z"}],"ghsa":[{"id":"GHSA-3x57-7r9m-7xwv","title":"A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1...","description":"A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1.1.7. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2022-01-29T00:00:43Z","modified":"2023-02-03T05:05:25Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:53:44.391187Z"}],"nvd":[{"id":"CVE-2021-40396","description":"A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1.1.7. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.","status":"published","published":"2022-01-28T20:15:11.44Z","modified":"2026-06-17T04:06:51.513Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:07:04.178977Z"}]}}