How severe is CVE-2020-12272?

CVE-2020-12272 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-12272 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12272?

CVE-2020-12272 primarily affects Trusteddomain Opendmarc. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12272?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-12272 published?

CVE-2020-12272 was published on 2020-04-27 and last updated on 2026-06-17.

CVE-2020-12272

CVE-2020-12272 is a medium-severity vulnerability in Trusteddomain Opendmarc with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-290.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-290
Affected product: Trusteddomain Opendmarc
Published: 2020-04-27
Last modified: 2026-06-17

Description

OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.

Frequently asked questions

What is CVE-2020-12272?: OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.
How severe is CVE-2020-12272?: CVE-2020-12272 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-12272 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12272?: CVE-2020-12272 primarily affects Trusteddomain Opendmarc. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12272?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12272 published?: CVE-2020-12272 was published on 2020-04-27 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:*
cpe:2.3:a:trusteddomain:opendmarc:1.4.0:-:*:*:*:*:*:*
cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta0:*:*:*:*:*:*
cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta1:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

More vulnerabilities in Trusteddomain Opendmarc

CVE-2020-12460 — Critical (CVSS 9.8): OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null termination in the function opendmarc_xml_parse…
CVE-2019-20790 — Critical (CVSS 9.8): OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC…
CVE-2019-16378 — Critical (CVSS 9.8): OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From:…
CVE-2024-25768 — High (CVSS 7.5): OpenDMARC 1.4.2 contains a null pointer dereference vulnerability in /OpenDMARC/libopendmarc/opendmarc_policy.c.
CVE-2021-34555 — High (CVSS 7.5): OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and…

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