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Vulnerability record · CVE-2005-3221 · published 14 October 2005

CVE-2005-3221: Fortinet antivirus vulnerability

Fortinet · Fortinet Antivirus

Multiple interpretation error in unspecified versions of Fortinet Antivirus allows remote attackers to bypass virus detection via a malicious executable in a specially crafted RAR file with malformed central and local headers, which can still be opened by products such as Winrar and PowerZip, even though they are rejected as corrupted by Winzip and BitZipper.

5.1 CVSS 2.0 Medium EPSS 1.7% · top 23.4%
5.1CVSS 2.0 base score
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

Multiple interpretation error in unspecified versions of Fortinet Antivirus allows remote attackers to bypass virus detection via a malicious executable in a specially crafted RAR file with malformed central and local headers, which can still be opened by products such as Winrar and PowerZip, even though they are rejected as corrupted by Winzip and BitZipper.

AV:N/AC:H/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=112879611919750&w=2
http://shadock.net/secubox/AVCraftedArchive.html
http://marc.info/?l=bugtraq&m=112879611919750&w=2
http://shadock.net/secubox/AVCraftedArchive.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2005-3221), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.