CVE-2019-16378

Name: CVE-2019-16378
Creator: NVD / NIST
Published: 2019-09-17T12:15:10.637+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.46%

Last modified Jun 17, 2026

CVE-2019-16378 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applications that consider a domain name to be relevant to the origin of an e-mail message.. EPSS estimates a 2.46% chance of exploitation in the next 30 days.

Description

OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect applications that consider a domain name to be relevant to the origin of an e-mail message.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.46%

82.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-290

Affected Software

Vendor	Product	Versions	Update
Trusteddomain	Opendmarc	<= 1.3.2	—
Trusteddomain	Opendmarc	1.4.0	Beta
Debian	Debian Linux	9.0	—
Debian	Debian Linux	10.0	—
Fedoraproject	Fedora	29	—
Fedoraproject	Fedora	30	—
Fedoraproject	Fedora	31	—
Canonical	Ubuntu Linux	18.04	—

References

http://www.openwall.com/lists/oss-security/2019/09/17/2Mailing List
https://bugs.debian.org/940081Mailing List, Third Party Advisory
https://github.com/trusteddomainproject/OpenDMARC/pull/48Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HEWDFGRKQHIWKFZH5BNWQDGUPNR7VH3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEUBIHJLMPMB6KHOSGDMUQKSAW4HOCYM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7RT6ID7MBCEPNZEIUKK2TZIOCYPJR6E/
https://seclists.org/bugtraq/2019/Sep/36Mailing List, Third Party Advisory
https://usn.ubuntu.com/4567-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4526Third Party Advisory
https://www.openwall.com/lists/oss-security/2019/09/11/8Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/09/17/2Mailing List
https://bugs.debian.org/940081Mailing List, Third Party Advisory
https://github.com/trusteddomainproject/OpenDMARC/pull/48Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HEWDFGRKQHIWKFZH5BNWQDGUPNR7VH3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEUBIHJLMPMB6KHOSGDMUQKSAW4HOCYM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7RT6ID7MBCEPNZEIUKK2TZIOCYPJR6E/
https://seclists.org/bugtraq/2019/Sep/36Mailing List, Third Party Advisory
https://usn.ubuntu.com/4567-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4526Third Party Advisory
https://www.openwall.com/lists/oss-security/2019/09/11/8Mailing List, Third Party Advisory

Timeline

Published: Sep 17, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-16378?

How severe is CVE-2019-16378?

CVE-2019-16378 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.46% probability of exploitation in the next 30 days.

How do I fix CVE-2019-16378?

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-2019-16378?

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

Scan your code now

Source: NVD / NIST