CVE-2011-1784: Keepalived

Low severity, CVSS 3.6. EPSS: 0.4% chance of exploitation in the next 30 days.

The pidfile_write function in core/pidfile.c in keepalived 1.2.2 and earlier uses 0666 permissions for the (1) keepalived.pid, (2) checkers.pid, and (3) vrrp.pid files in /var/run/, which allows local users to kill arbitrary processes by writing a PID to one of these files.

Affected products

• Keepalived Keepalived: up to and including 1.2.2; version 0.2.1 only; version 0.2.3 only; version 0.2.6 only; version 0.2.7 only; version 0.3.5 only; …

Published 2011-05-20. Last modified 2026-06-16.