CVE-2025-49643

MEDIUM

Zabbix Frontend < 6.0.42 - Denial of Service

Title source: rule

Description

An authenticated Zabbix user (including Guest) is able to cause disproportionate CPU load on the webserver by sending specially crafted parameters to /imgstore.php, leading to potential denial of service.

References (1)

[Vendor Advisory] https://support.zabbix.com/browse/ZBX-27284

Scores

CVSS v3 6.5

EPSS 0.0005

EPSS Percentile 15.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-405

Status published

Affected Products (1)

zabbix/frontend < 6.0.42

Timeline

Published Dec 01, 2025

Tracked Since Feb 18, 2026