Denial of service in Clam AntiVirus (ClamAV)

Published: 2020-07-24
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-3481
Exploitation vector Network
Public exploit N/A
Vulnerable software
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor ClamAV

Security Advisory

This security advisory describes one medium risk vulnerability.

1) NULL pointer dereference

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-3481

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the EGG archive module. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Install update from vendor's website.

Vulnerable software versions

ClamAV: 0.102.0, 0.102.1, 0.102.2, 0.102.3

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.