CVE-2026-66140: Exim

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

Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.

Affected products

• Exim Exim: before 4.99.5 (fixed in 4.99.5)

Published 2026-07-24. Last modified 2026-08-17.