{"id":"CVE-2020-13555","aliases":["EUVD-2020-5802","GHSA-p5fj-p4px-rj6r"],"status":"published","title":"An exploitable local privilege elevation vulnerability exists in the file system permissions of...","description":"An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In COM Server Application Privilege Escalation, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.","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":"2026-11-11","score":0.00504,"percentile":0.43544,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-276"],"published":"2021-02-17T18:23:29Z","modified":"2026-06-17T02:53:19Z","products":[{"vendor":"advantech","product":"webaccess\\/scada"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1169","tags":["x_refsource_MISC","x_transferred","Exploit","Technical Description","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13555"},{"url":"https://github.com/advisories/GHSA-p5fj-p4px-rj6r"}],"sources":{"cve":[{"id":"CVE-2020-13555","description":"An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In COM Server Application Privilege Escalation, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.","status":"published","published":"2021-02-17T18:23:29Z","modified":"2024-08-04T12:25:15.254Z","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":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2020-5802","description":"An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In COM Server Application Privilege Escalation, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.","status":"published","published":"2021-02-17T18:23:29Z","modified":"2024-08-04T12:25:15Z","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":"2026-11-03T03:07:37.234427Z"}],"ghsa":[{"id":"GHSA-p5fj-p4px-rj6r","title":"An exploitable local privilege elevation vulnerability exists in the file system permissions of...","description":"An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In COM Server Application Privilege Escalation, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.","status":"published","published":"2022-05-24T17:42:26Z","modified":"2023-01-29T05:05:28Z","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"}],"cwes":["CWE-269","CWE-276"],"updated_at":"2026-11-02T14:45:47.837276Z"}],"nvd":[{"id":"CVE-2020-13555","description":"An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In COM Server Application Privilege Escalation, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.","status":"published","published":"2021-02-17T19:15:12.59Z","modified":"2026-06-17T02:53:19.56Z","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":"2026-11-02T14:06:34.188486Z"}]}}