CVE-2020-28010: Exim

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Exim 4 before 4.94.2 allows Out-of-bounds Write because the main function, while setuid root, copies the current working directory pathname into a buffer that is too small (on some common platforms).

Affected products

• Exim Exim: from 4.00, before 4.94.2 (fixed in 4.94.2)

Published 2021-05-06. Last modified 2026-06-17.