HOMEVULNERABILITIESCVE-2020-3481
HIGH

CVE-2020-3481

CWE-476Published: July 20, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

A vulnerability in the EGG archive parsing module in Clam AntiVirus (ClamAV) Software versions 0.102.0 - 0.102.3 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to a null pointer dereference. An attacker could exploit this vulnerability by sending a crafted EGG file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.

NVD Source

Technical Analysis

CVE-2020-3481 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
clamav1 product(s)
clamav
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
Source: NVD CPE · 9 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://blog.clamav.net/2020/07/clamav-01024-security-patch-released.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/08/msg00010.html
ADVISORYhttps://security.gentoo.org/glsa/202007-23
ADVISORYhttps://usn.ubuntu.com/4435-1/
ADVISORYhttps://usn.ubuntu.com/4435-2/
ADVISORYhttps://blog.clamav.net/2020/07/clamav-01024-security-patch-released.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/08/msg00010.html
ADVISORYhttps://security.gentoo.org/glsa/202007-23
ADVISORYhttps://usn.ubuntu.com/4435-1/
ADVISORYhttps://usn.ubuntu.com/4435-2/

All References (14)

→
https://blog.clamav.net/2020/07/clamav-01024-security-patch-released.htmlVendor Advisory
→
https://lists.debian.org/debian-lts-announce/2020/08/msg00010.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IJ67VH37NCG25PICGWFWZHSVG7PBT7MC/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QM7EXJHDEZJLWM2NKH6TCDXOBP5NNYIN/
→
https://security.gentoo.org/glsa/202007-23Third Party Advisory
→
https://usn.ubuntu.com/4435-1/Third Party Advisory
→
https://usn.ubuntu.com/4435-2/Third Party Advisory
→
https://blog.clamav.net/2020/07/clamav-01024-security-patch-released.htmlVendor Advisory
→
https://lists.debian.org/debian-lts-announce/2020/08/msg00010.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IJ67VH37NCG25PICGWFWZHSVG7PBT7MC/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QM7EXJHDEZJLWM2NKH6TCDXOBP5NNYIN/
→
https://security.gentoo.org/glsa/202007-23Third Party Advisory
→
https://usn.ubuntu.com/4435-1/Third Party Advisory
→
https://usn.ubuntu.com/4435-2/Third Party Advisory

Quick Facts

CVE IDCVE-2020-3481
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-476
CISA KEVNo
Affected4 vendor(s)
PublishedJul 20, 2020

Related CVEs (CWE-476)

CVE-2010-2495
10.0
CVE-2022-36648
10.0
CVE-2016-5689
9.8
CVE-2016-3821
9.8
CVE-2015-8787
9.8
CVE-2015-0573
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-3481 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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