CVE-2010-2024: Exim

Medium severity, CVSS 4.4. EPSS: 0.3% chance of exploitation in the next 30 days.

transports/appendfile.c in Exim before 4.72, when MBX locking is enabled, allows local users to change permissions of arbitrary files or create arbitrary files, and cause a denial of service or possibly gain privileges, via a symlink attack on a lockfile in /tmp/.

Affected products

• Exim Exim: up to and including 4.71; version 4.10 only; version 4.20 only; version 4.21 only; version 4.22 only; version 4.23 only; …

Published 2010-06-07. Last modified 2026-06-16.