{"id":"CVE-2005-3381","url":"https://www.cyber-defence.io/tools/cve/CVE-2005-3381","generatedAt":"2026-10-27T17:44:38.651Z","title":"Multiple interpretation error in Ukrainian National Antivirus (UNA) 1.83.2.16 with kernel 265 allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an \"MZ\" magic byte sequence which is normally associated with EXE,…","description":"Multiple interpretation error in Ukrainian National Antivirus (UNA) 1.83.2.16 with kernel 265 allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an \"MZ\" magic byte sequence which is normally associated with EXE, which causes the file to be treated as a safe type that could still be executed as a dangerous file type by applications on the end system, as demonstrated by a \"triple headed\" program that contains EXE, EML, and HTML content, aka the \"magic byte bug.\"","published":"2005-10-30T14:34:00.000Z","lastModified":"2026-06-16T22:16:51.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N"},"cwe":[],"affected":["ukranian national antivirus/una"],"epss":{"score":0.02126,"percentile":0.81798,"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 (2.13%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://marc.info/?l=bugtraq&m=113026417802703&w=2","source":"cve@mitre.org"},{"url":"http://www.securityelf.org/magicbyte.html","source":"cve@mitre.org"},{"url":"http://www.securityelf.org/magicbyteadv.html","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityelf.org/updmagic.html","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/15189","source":"cve@mitre.org"},{"url":"http://marc.info/?l=bugtraq&m=113026417802703&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityelf.org/magicbyte.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityelf.org/magicbyteadv.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityelf.org/updmagic.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/15189","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2005-3381","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."}