CVE-2022-20785: On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vu...

Description

On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in HTML file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional information becomes available.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

6.22%

92.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Clamav	Clamav	< 0.103.5
Clamav	Clamav	<= 0.103.5
Clamav	Clamav	>= 0.104.0, < 0.104.2
Cisco	Secure Endpoint	< 1.16.3
Cisco	Secure Endpoint	< 1.17.2
Cisco	Secure Endpoint	< 7.5.5
Cisco	Secure Endpoint	>= 1.18.0, < 1.18.2
Fedoraproject	Fedora	34
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36
Debian	Debian Linux	9.0

References

Timeline

Published: May 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-20785?

On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in HTML file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional information becomes available.

How severe is CVE-2022-20785?

CVE-2022-20785 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 6.22% probability of exploitation in the next 30 days.

How do I fix CVE-2022-20785?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.