CVE-2011-3263: Zabbix

Medium severity, CVSS 5.0. EPSS: 1.3% chance of exploitation in the next 30 days.

zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.

Affected products

• Zabbix Zabbix: up to and including 1.8.5; version 1.1 only; version 1.1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; …

Published 2011-08-19. Last modified 2026-06-16.