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CVE-2019-16378

31
FAUCET Score

CVE-2019-16378 is a critical signature-bypass vulnerability in OpenDMARC versions through 1.3.2 and 1.4.x through 1.4.0-Beta1, potentially impacting applications that rely on domain names for email origin verification. With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts with low attack complexity. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.3.2CPE matchmatch criteria
cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:*
1.4.0CPE matchmatch criteria
cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta:*:*:*:*:*:*
1.4.0CPE matchmatch criteria
cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta1:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.46%
Probability of exploitation in next 30 days
EPSS Percentile
82.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0246 is in the 73rd percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

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