CVE-2024-25768

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc...

7.5 HighFix available

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.73%Up 0.7 points since Feb 27, 2024

What each source reports

CVE List Score used 7.5

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Record: CVE-2024-25768
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

EUVDEUVD-2024-23076 7.5

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Record: EUVD-2024-23076
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-692m-8cmm-mgxx 7.5

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc...

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Record: GHSA-692m-8cmm-mgxx
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

NVD 7.5

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Record: CVE-2024-25768
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

OSV 7.5

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Record: CVE-2024-25768
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2024-25768 7.5

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Record: DEBIAN-CVE-2024-25768
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-25768 7.5

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.

Record: UBUNTU-CVE-2024-25768
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2024-0370 No score

Updated opendmarc packages fix security vulnerability

Fix null pointer dereference in opendmarc_policy.c. (CVE-2024-25768)

Record: MGASA-2024-0370
Updated: 2026-11-02

OSVOESA-2024-2307 No score

opendmarc security update

OpenDMARC (Domain-based Message Authentication, Reporting & Conformance) provides an open source library that implements the DMARC verification service plus a milter-based filter application that can plug in to any milter-aware MTA, including sendmail, Postfix, or any other MTA that supports the milter protocol.

Security Fix(es):

OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.(CVE-2024-25768)

Record: OESA-2024-2307
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`opendmarc` Debian:12	All versions, plus listed versions 1.4.2-21.4.2-31.4.2-41.4.2-4.11.4.2-4.1~exp11.4.2-51.4.2-5.1	None known
`opendmarc` Debian:13	before 1.4.2-5	1.4.2-5
`opendmarc` Debian:14	before 1.4.2-5	1.4.2-5
`opendmarc` Mageia:9	before 1.4.2-2.1.mga9	1.4.2-2.1.mga9
`opendmarc` openEuler:22.03-LTS-SP3	before 1.4.2-3.oe2203sp3	1.4.2-3.oe2203sp3
`opendmarc` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.3.1+dfsg-21.3.1+dfsg-31.3.1+dfsg-3ubuntu0.1~esm1	None known
`opendmarc` Ubuntu:18.04:LTS	All versions, plus listed versions 1.3.2-21.3.2-31.3.2-3ubuntu0.11.3.2-3ubuntu0.2	None known
`opendmarc` Ubuntu:20.04:LTS	All versions, plus listed versions 1.3.2-61.3.2-71.3.2-7ubuntu0.1	None known
`opendmarc` Ubuntu:22.04:LTS	All versions, plus listed versions 1.4.0~beta1+dfsg-61.4.1.1-11.4.1.1-21.4.2-1	None known
`opendmarc` Ubuntu:24.04:LTS	All versions, plus listed versions 1.4.2-31.4.2-41.4.2-4.1build11.4.2-4.1build2	None known
`opendmarc` Ubuntu:25.10	All versions, plus listed versions 1.4.2-51.4.2-5.1	None known
`opendmarc` Ubuntu:26.10	All versions, plus listed versions 1.4.2-5.1build1	None known
`opendmarc` Ubuntu:26.04:LTS	All versions, plus listed versions 1.4.2-5.11.4.2-5.1build1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-25768 is a high vulnerability (CVSS 7.5) in Opendmarc, published February 26, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.73%, the 54th percentile. Fixed in opendmarc 1.4.2-5.

References

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