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Vulnerability record · CVE-2005-2920 · published 20 September 2005

CVE-2005-2920: Clam anti-virus clamav vulnerability

CClam Anti Virus · Clamav

Buffer overflow in libclamav/upx.c in Clam AntiVirus (ClamAV) before 0.87 allows remote attackers to execute arbitrary code via a crafted UPX packed executable.

7.5 CVSS 2.0 High EPSS 8.2% · top 5.3%
7.5CVSS 2.0 base score
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
22References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in libclamav/upx.c in Clam AntiVirus (ClamAV) before 0.87 allows remote attackers to execute arbitrary code via a crafted UPX packed executable.

AV:N/AC:L/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://secunia.com/advisories/16848
http://secunia.com/advisories/16989
http://sourceforge.net/project/shownotes.php?release_id=356974 Patch
http://www.debian.org/security/2005/dsa-824
http://www.gentoo.org/security/en/glsa/glsa-200509-13.xml PatchVendor Advisory
http://www.kb.cert.org/vuls/id/363713 US Government Resource
http://www.novell.com/linux/security/advisories/2005_55_clamav.html
http://www.osvdb.org/19506
http://www.securityfocus.com/bid/14866
http://www.vupen.com/english/advisories/2005/1774
https://exchange.xforce.ibmcloud.com/vulnerabilities/22307
http://secunia.com/advisories/16848
http://secunia.com/advisories/16989
http://sourceforge.net/project/shownotes.php?release_id=356974 Patch
http://www.debian.org/security/2005/dsa-824
http://www.gentoo.org/security/en/glsa/glsa-200509-13.xml PatchVendor Advisory
http://www.kb.cert.org/vuls/id/363713 US Government Resource
http://www.novell.com/linux/security/advisories/2005_55_clamav.html
http://www.osvdb.org/19506
http://www.securityfocus.com/bid/14866
http://www.vupen.com/english/advisories/2005/1774
https://exchange.xforce.ibmcloud.com/vulnerabilities/22307

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Related vulnerabilities

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

10.0CVE-2008-1100Clam anti-virus clamav memory buffer overflow vulnerabilityBuffer overflow in the cli_scanpe function in libclamav (libclamav/pe.c) for ClamAV 0.92 and 0.92.1 allows remote attackers to execute arbitrary code…EPSS 11%10.0CVE-2008-0318Clam anti-virus clamav vulnerabilityInteger overflow in the cli_scanpe function in libclamav in ClamAV before 0.92.1, as used in clamd, allows remote attackers to cause a denial of serv…EPSS 7.9%10.0CVE-2007-6337Clam anti-virus clamav vulnerabilityUnspecified vulnerability in the bzip2 decompression algorithm in nsis/bzlib_private.h in ClamAV before 0.92 has unknown impact and remote attack vec…EPSS 2.8%10.0CVE-2007-3023Clam anti-virus clamav vulnerabilityunsp.c in ClamAV before 0.90.3 and 0.91 before 0.91rc1 does not properly calculate the end of a certain buffer, with unknown impact and remote attack…EPSS 2.2%10.0CVE-2005-3587Clam anti-virus clamav vulnerabilityImproper boundary checks in petite.c in Clam AntiVirus (ClamAV) before 0.87.1 allows attackers to perform unknown attacks via unknown vectors.EPSS 2.2%9.3CVE-2008-5050Clam anti-virus clamav memory buffer overflow vulnerabilityOff-by-one error in the get_unicode_name function (libclamav/vba_extract.c) in Clam Anti-Virus (ClamAV) before 0.94.1 allows remote attackers to caus…EPSS 8.3%7.8CVE-2007-2029Clam anti-virus clamav vulnerabilityFile descriptor leak in the PDF handler in Clam AntiVirus (ClamAV) allows remote attackers to cause a denial of service via a crafted PDF file.EPSS 3.0%7.8CVE-2005-3239Clam anti-virus clamav vulnerabilityThe OLE2 unpacker in clamd in Clam AntiVirus (ClamAV) 0.87-1 allows remote attackers to cause a denial of service (segmentation fault) via a DOC file…EPSS 4.5%

Source: NIST National Vulnerability Database (record CVE-2005-2920), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.