CVE-2026-101014 Trusted Domain Project OpenDMARC - Buffer Overflow

Trusted Domain Project OpenDMARC <= 1.4.2 contains a buffer overflow caused by an off-by-one error in opendmarc_util_cleanup function of DMARC Record Parser, letting remote attackers cause potential memory corruption, exploit requires crafted input.

CVSS base score 7.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Published
28 September 2026
Updated
15 October 2026
Weakness
CWE-189

Vendor fix

Apply the patch b3b1da9264bc80324094a27c71e7369bdedc62ae or update to the latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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