{"id":"CVE-2019-19101","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-19101","generatedAt":"2026-10-27T23:27:28.832Z","title":"A missing secure communication definition and an incomplete TLS validation in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.5SP, < 4.6.4 and < 4.7.2 enable unauthenticated users to perform MITM…","description":"A missing secure communication definition and an incomplete TLS validation in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.5SP, < 4.6.4 and < 4.7.2 enable unauthenticated users to perform MITM attacks via the B&R upgrade server.","published":"2020-04-29T03:15:17.000Z","lastModified":"2026-06-17T02:26:10.000Z","status":"Modified","sourceIdentifier":"cybersecurity@ch.abb.com","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-326","CWE-295"],"affected":["br-automation/automation studio"],"epss":{"score":0.00528,"percentile":0.44436,"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":"low","text":"Lower severity and a low EPSS score (0.53%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.br-automation.com/en/downloads/032020-multiple-vulnerabilities-in-automation-studio/","tags":["Broken Link","Vendor Advisory"],"source":"cybersecurity@ch.abb.com"},{"url":"https://www.br-automation.com/en/downloads/032020-multiple-vulnerabilities-in-automation-studio/","tags":["Broken Link","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-19101","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."}