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Vulnerability record · CVE-2006-6407 · published 10 December 2006

CVE-2006-6407: F-prot antivirus vulnerability

F Prot · F Prot Antivirus

F-Prot Antivirus for Linux x86 Mail Servers 4.6.6 allows remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file.

5.0 CVSS 2.0 Medium EPSS 2.2% · top 18.5%
5.0CVSS 2.0 base score
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

F-Prot Antivirus for Linux x86 Mail Servers 4.6.6 allows remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file.

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

Affected products

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

References

LinkTags
http://www.quantenblog.net/security/virus-scanner-bypass ExploitVendor Advisory
http://www.securityfocus.com/archive/1/453654/100/0/threaded
http://www.securityfocus.com/bid/21461
http://www.quantenblog.net/security/virus-scanner-bypass ExploitVendor Advisory
http://www.securityfocus.com/archive/1/453654/100/0/threaded
http://www.securityfocus.com/bid/21461

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Related vulnerabilities

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

10.0CVE-2009-1783F-prot antivirus improper input validation vulnerabilityMultiple FRISK Software F-Prot anti-virus products, including Antivirus for Exchange, Linux on IBM zSeries, Linux x86 File Servers, Linux x86 Mail Se…EPSS 3.4%7.5CVE-2006-6293F-prot antivirus memory buffer overflow vulnerabilityHeap-based buffer overflow in FRISK Software F-Prot Antivirus before 4.6.7 allows user-assisted remote attackers to execute arbitrary code via a craf…EPSS 16%5.0CVE-2008-5747F-prot antivirus vulnerabilityF-Prot 4.6.8 for GNU/Linux allows remote attackers to bypass anti-virus protection via a crafted ELF program with a "corrupted" header that still all…EPSS 3.1%5.0CVE-2008-3447F-prot antivirus vulnerabilityThe scanning engine in F-Prot Antivirus 6.2.1 4252 allows remote attackers to cause a denial of service (infinite loop) via a malformed ZIP archive, …EPSS 7.9%4.3CVE-2012-1456Antivirus TAR parsers bypassed by appended ZIP fileMultiple antivirus products parse TAR archives in a way that lets a TAR file with an appended ZIP evade malware detection. An attacker can therefore …EPSS 100%analysed4.3CVE-2012-1457Antivirus TAR parser malware detection bypass via oversized length fieldThe TAR file parser in numerous antivirus and anti-malware products mishandles a TAR archive entry whose length field exceeds the total TAR file size…EPSS 98%analysed4.3CVE-2012-1459TAR parser malware detection bypass in multiple antivirus productsThe TAR file parser in dozens of antivirus products mishandles a TAR archive entry whose length field spans the entire entry plus part of the next en…EPSS 100%analysed4.3CVE-2012-1460Gzip parser in multiple antivirus engines allows malware detection bypassThe Gzip file parser in several antivirus products mishandles .tar.gz archives containing stray bytes at the end, allowing malware to evade detection…EPSS 94%analysed

Source: NIST National Vulnerability Database (record CVE-2006-6407), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.