CVE-2006-6406
Clam AntiVirus (ClamAV) 0.88.6 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.
Does this matter?
Lower severity and a low EPSS score (3.26%). Track it; it rarely justifies an emergency change on its own.
Description
Clam AntiVirus (ClamAV) 0.88.6 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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
- EPSS
- 3.26% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- clam anti-virus/clamav
- Source
- cve@mitre.org
EPSS 3.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://kolab.org/security/kolab-vendor-notice-14.txt
- http://secunia.com/advisories/23362
- http://secunia.com/advisories/23379
- http://secunia.com/advisories/23411
- http://secunia.com/advisories/23460
- http://www.debian.org/security/2006/dsa-1238
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:230
- http://www.novell.com/linux/security/advisories/2006_78_clamav.html
- http://www.quantenblog.net/security/virus-scanner-bypassExploit, Vendor Advisory
- http://www.securityfocus.com/archive/1/453654/100/0/threaded
- http://www.securityfocus.com/bid/21461
- http://www.vupen.com/english/advisories/2006/4948
- http://www.vupen.com/english/advisories/2006/5113
- http://kolab.org/security/kolab-vendor-notice-14.txt
- http://secunia.com/advisories/23362
- http://secunia.com/advisories/23379
- http://secunia.com/advisories/23411
- http://secunia.com/advisories/23460
- http://www.debian.org/security/2006/dsa-1238
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:230
- http://www.novell.com/linux/security/advisories/2006_78_clamav.html
- http://www.quantenblog.net/security/virus-scanner-bypassExploit, Vendor Advisory
- http://www.securityfocus.com/archive/1/453654/100/0/threaded
- http://www.securityfocus.com/bid/21461
- http://www.vupen.com/english/advisories/2006/4948
- http://www.vupen.com/english/advisories/2006/5113
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.