CVE-2026-101279

MEDIUM 6.5

Trusted Domain Project OpenDMARC opendmarc_policy.c integer overflow

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CWE	CWE-190 CWE-189
Vendor	trusted domain project
Product	opendmarc
Published	Sep 29, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Trusted Domain Project / OpenDMARC

1.4.0 1.4.1 1.4.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/411036 vuldb.com: https://vuldb.com/vuln/411036/cti vuldb.com: https://vuldb.com/cve/CVE-2026-101279 vuldb.com: https://vuldb.com/submit/918280 xuyongzhe-vt.github.io: https://xuyongzhe-vt.github.io/share/dmarc-pct-integer-handling.html

Credits

🔍 yongzhe_xu (VulDB User) VulDB CNA Team