{"id":"CVE-2020-24679","aliases":["EUVD-2020-17393","GHSA-j5q4-h79w-mh86"],"status":"published","title":"Denial of Service attack on Symphony Plus","description":"A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01886,"percentile":0.79785,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-12-22T21:17:12Z","modified":"2026-06-17T03:05:58Z","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-2020-24679"},{"url":"https://github.com/advisories/GHSA-j5q4-h79w-mh86"}],"sources":{"cve":[{"id":"CVE-2020-24679","title":"Denial of Service attack on Symphony Plus","description":"A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.","status":"published","published":"2020-12-22T21:17:12.753Z","modified":"2024-09-17T01:20:53.487Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:54.170199Z"}],"euvd":[{"id":"EUVD-2020-17393","description":"A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.","status":"published","published":"2020-12-22T21:17:12Z","modified":"2024-09-17T01:20:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:50.749865Z"}],"ghsa":[{"id":"GHSA-j5q4-h79w-mh86","title":"A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An...","description":"A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.","status":"published","published":"2022-05-24T17:37:02Z","modified":"2023-01-29T05:04:48Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:38.830072Z"}],"nvd":[{"id":"CVE-2020-24679","description":"A S+ Operations and S+ Historian service is subject to a DoS by special crafted messages. An attacker might use this flaw to make it crash or even execute arbitrary code on the machine where the service is hosted.","status":"published","published":"2020-12-22T22:15:13.583Z","modified":"2026-06-17T03:05:58.323Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:27.73474Z"}]}}