CVE-2005-3381 json
Multiple interpretation error in Ukrainian National Antivirus (UNA) 1.83.2.16 with kernel 265 allows remote attackers to bypass virus scann…
published 2005-10-29 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-3380
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
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."
Exploit prediction
2.13% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
References
-
securityelf.org
/magicbyteadv.html
vendor-advisory
-
securityfocus.com
/bid/15189
vdb-entry
- securityelf.org /magicbyte.html
-
marc.info
/?l=bugtraq&m=113026417802703&w=2
mailing-list
- securityelf.org /updmagic.html
Sources
- CVE List CVE-2005-3381
- NVD CVE-2005-3381
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