CVE-2021-34555

PoC —

CVSS 3.1

7.5 high

EPSS

3%p85

Published

Jun 10, 2021 (Jun 10, 2021)

Modified

Jun 17, 2026

Description

OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header field.

Vendors: trusteddomain fedoraproject
Products: opendmarc, fedora
Weakness: CWE-476
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (2.7%)

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