CVE-2026-100889 Trusted Domain Project OpenDKIM - Buffer Overflow

Trusted Domain Project OpenDKIM <= 2.11.0 contains an off-by-one vulnerability caused by improper handling in dkim_qp_decode function in Decoder component, letting remote attackers potentially cause 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
0.30% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service
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

Update to the latest version beyond 2.11.0.

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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