CVE-2019-15961

Public Exploit
Clam AntiVirus (ClamAV) Software Email Parsing Vulnerability

Description

A vulnerability in the email parsing module Clam AntiVirus (ClamAV) Software versions 0.102.0, 0.101.4 and prior could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to inefficient MIME parsing routines that result in extremely long scan times of specially formatted email files. 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 to scan the crafted email file indefinitely, resulting in a denial of service condition.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.21% Top 20%
Vendor Advisory clamav.net Vendor Advisory cisco.com Vendor Advisory ubuntu.com Vendor Advisory gentoo.org
Affected: ClamAV ClamAV
Published at:
Updated at:

References

Link Tags
https://bugzilla.clamav.net/show_bug.cgi?id=12380 issue tracking exploit vendor advisory
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvr56010 third party advisory vendor advisory
https://usn.ubuntu.com/4230-2/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00016.html third party advisory mailing list
https://security.gentoo.org/glsa/202003-46 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-15961?
CVE-2019-15961 has been scored as a high severity vulnerability.
How to fix CVE-2019-15961?
To fix CVE-2019-15961, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-15961 being actively exploited in the wild?
It is possible that CVE-2019-15961 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-15961?
CVE-2019-15961 affects ClamAV ClamAV.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.