{"id":"CVE-2020-24674","aliases":["EUVD-2020-17388","GHSA-895q-vqrm-2jch"],"status":"published","title":"Improper Authorization in Symphony Plus","description":"In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.03106,"percentile":0.87944,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-285","CWE-863"],"published":"2020-12-22T21:20:16Z","modified":"2026-06-17T03:05:57Z","products":[{"vendor":"abb","product":"abb ability™ symphony® plus historian"},{"vendor":"abb","product":"abb ability™ symphony® plus operations"},{"vendor":"abb","product":"symphony_\\+_historian"},{"vendor":"abb","product":"symphony_\\+_operations"}],"references":[{"url":"https://search.abb.com/library/Download.aspx?DocumentID=2PAA123980\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://search.abb.com/library/Download.aspx?DocumentID=2PAA123982\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24674"},{"url":"https://github.com/advisories/GHSA-895q-vqrm-2jch"}],"sources":{"cve":[{"id":"CVE-2020-24674","title":"Improper Authorization in Symphony Plus","description":"In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.","status":"published","published":"2020-12-22T21:20:16.269Z","modified":"2024-09-16T16:54:08.113Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-285"],"updated_at":"2026-11-02T14:35:54.468882Z"}],"euvd":[{"id":"EUVD-2020-17388","description":"In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.","status":"published","published":"2020-12-22T21:20:16Z","modified":"2024-09-16T16:54:08Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:55:46.745399Z"}],"ghsa":[{"id":"GHSA-895q-vqrm-2jch","title":"In S+ Operations and S+ Historian, not all client commands correctly check user permission as...","description":"In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.","status":"published","published":"2022-05-24T17:37:02Z","modified":"2023-01-29T05:05:48Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:45:52.819939Z"}],"nvd":[{"id":"CVE-2020-24674","description":"In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.","status":"published","published":"2020-12-22T22:15:13.147Z","modified":"2026-06-17T03:05:57.703Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-285","CWE-863"],"updated_at":"2026-11-02T14:06:27.73474Z"}]}}