CVE-2020-35766: Opendkim

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the "A number of self-test programs are included here for unit-testing the library" situation.

Affected products

• Opendkim Opendkim: up to and including 2.10.3

Published 2020-12-28. Last modified 2026-06-17.