CVE-2025-49643

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.

CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-405 CWE-405

Affected Products

Vendor	Product	Versions
zabbix	frontend	6.0.0 — 6.0.42
zabbix	frontend	7.0.0 — 7.0.19
zabbix	frontend	7.2.0 — 7.2.13
zabbix	frontend	7.4.0 — 7.4.3

References

Advisories & Patches

https://support.zabbix.com/browse/ZBX-27284

Frequently Asked Questions

What is CVE-2025-49643? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-49643? +

CVE-2025-49643 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-49643? +

CVE-2025-49643 affects products from zabbix, specifically: frontend. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-49643? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-53633 9.8

Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. When decoding a scenario (i.e. a …

CVE-2024-56200 8.6

Altair is a fork of Misskey v12. Affected versions lack of request validation and lack of authentication in the image …

CVE-2025-42874 7.9

SAP NetWeaver remote service for Xcelsius allows an attacker with network access and high privileges to execute arbitrary code on …

CVE-2025-30204 7.5

golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, …

CVE-2024-55628 7.5

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.8, DNS …

CVE-2024-11187 7.5

It is possible to construct a zone such that some queries to it will generate responses containing numerous records in …