CVE-2009-4500: Zabbix

Medium severity, CVSS 5.0. EPSS: 2.3% chance of exploitation in the next 30 days.

The process_trap function in trapper/trapper.c in Zabbix Server before 1.6.6 allows remote attackers to cause a denial of service (crash) via a crafted request with data that lacks an expected : (colon) separator, which triggers a NULL pointer dereference.

Affected products

• Zabbix Zabbix: up to and including 1.4.6; 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.