CVE-2009-4501: Zabbix

Medium severity, CVSS 5.0. EPSS: 8.5% chance of exploitation in the next 30 days.

The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows remote attackers to cause a denial of service (crash) via a request that lacks expected separators, which triggers a NULL pointer dereference, as demonstrated using the Command keyword.

Affected products

• Zabbix Zabbix: up to and including 1.6.7; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; version 1.1.5 only; version 1.4.2 only; …

Published 2009-12-31. Last modified 2026-06-16.