CVE-2020-3123

Name: CVE-2020-3123
Creator: NVD / NIST
Published: 2020-02-05T18:15:11.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.60%

Last modified Jun 17, 2026

CVE-2020-3123 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability in the Data-Loss-Prevention (DLP) module in Clam AntiVirus (ClamAV) Software versions 0.102.1 and 0.102.0 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to an out-of-bounds read affecting users that have enabled the optional DLP feature. EPSS estimates a 2.60% chance of exploitation in the next 30 days.

Description

A vulnerability in the Data-Loss-Prevention (DLP) module in Clam AntiVirus (ClamAV) Software versions 0.102.1 and 0.102.0 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to an out-of-bounds read affecting users that have enabled the optional DLP feature. An attacker could exploit this vulnerability by sending a crafted email 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.

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

2.60%

83.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Clamav	Clamav	0.102.0
Clamav	Clamav	0.102.1
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10

References

https://blog.clamav.net/2020/02/clamav-01022-security-patch-released.htmlRelease Notes, Vendor Advisory
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvs59062Third Party Advisory
https://security.gentoo.org/glsa/202003-46Third Party Advisory
https://usn.ubuntu.com/4280-1/Third Party Advisory
https://usn.ubuntu.com/4280-2/Third Party Advisory
https://blog.clamav.net/2020/02/clamav-01022-security-patch-released.htmlRelease Notes, Vendor Advisory
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvs59062Third Party Advisory
https://security.gentoo.org/glsa/202003-46Third Party Advisory
https://usn.ubuntu.com/4280-1/Third Party Advisory
https://usn.ubuntu.com/4280-2/Third Party Advisory

Timeline

Published: Feb 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3123?

How severe is CVE-2020-3123?

CVE-2020-3123 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.60% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3123?

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.

Are you affected by CVE-2020-3123?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST