In the trapper functionality of Zabbix Server 2.4.x, specifically crafted trapper packets can pass database logic checks, resulting in database writes. An attacker can set up a Man-in-the-Middle server to alter trapper requests made between an active Zabbix proxy and Server to trigger this vulnerability.
Severity
CVSS 3.0
7.0 high
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L
EPSS
5.2% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)