{"id":"CVE-2020-24674","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-24674","generatedAt":"2026-10-27T20:22:03.610Z","title":"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.","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.","published":"2020-12-22T22:15:13.000Z","lastModified":"2026-06-17T03:05:58.000Z","status":"Modified","sourceIdentifier":"cybersecurity@ch.abb.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-285","CWE-863"],"affected":["abb/symphony \\+ historian","abb/symphony \\+ operations"],"epss":{"score":0.03106,"percentile":0.87686,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://search.abb.com/library/Download.aspx?DocumentID=2PAA123980&LanguageCode=en&DocumentPartId=&Action=Launch","tags":["Mitigation","Vendor Advisory"],"source":"cybersecurity@ch.abb.com"},{"url":"https://search.abb.com/library/Download.aspx?DocumentID=2PAA123982&LanguageCode=en&DocumentPartId=&Action=Launch","tags":["Mitigation","Vendor Advisory"],"source":"cybersecurity@ch.abb.com"},{"url":"https://search.abb.com/library/Download.aspx?DocumentID=2PAA123980&LanguageCode=en&DocumentPartId=&Action=Launch","tags":["Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://search.abb.com/library/Download.aspx?DocumentID=2PAA123982&LanguageCode=en&DocumentPartId=&Action=Launch","tags":["Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-24674","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}