CVE-2011-0017: Exim

Medium severity, CVSS 6.9. EPSS: 0.4% chance of exploitation in the next 30 days.

The open_log function in log.c in Exim 4.72 and earlier does not check the return value from (1) setuid or (2) setgid system calls, which allows local users to append log data to arbitrary files via a symlink attack.

Affected products

• Exim Exim: up to and including 4.72; version 2.10 only; version 2.11 only; version 2.12 only; version 3.00 only; version 3.01 only; …

Published 2011-02-02. Last modified 2026-06-16.