{"id":"CVE-2020-9320","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-9320","generatedAt":"2026-10-27T23:43:14.187Z","title":"Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive.","description":"Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive. This affects versions before 8.3.54.138 of Antivirus for Endpoint, Antivirus for Small Business, Exchange Security (Gateway), Internet Security Suite for Windows, Prime, Free Security Suite for Windows, and Cross Platform Anti-malware SDK. NOTE: Vendor asserts that vulnerability does not exist in product","published":"2020-02-20T22:15:12.000Z","lastModified":"2026-06-17T03:27:45.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},"cwe":["CWE-434"],"affected":["avira/anti-malware sdk","avira/antivirus server","avira/avira antivirus for endpoint","avira/avira antivirus for small business","avira/avira exchange security","avira/avira free security suite","avira/avira internet security suite","avira/avira prime"],"epss":{"score":0.02882,"percentile":0.86759,"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 (2.88%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/156472/AVIRA-Generic-Malformed-Container-Bypass.html","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2020/Feb/31","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://blog.zoller.lu/p/from-low-hanging-fruit-department-avira.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.zoller.lu/%5BTZO-01-2020%5D%20AVIRA%20Generic%20Bypass%20ISO.pdf","source":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/156472/AVIRA-Generic-Malformed-Container-Bypass.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2020/Feb/31","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://blog.zoller.lu/p/from-low-hanging-fruit-department-avira.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zoller.lu/%5BTZO-01-2020%5D%20AVIRA%20Generic%20Bypass%20ISO.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-9320","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."}