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.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00051.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Zabbix Zabbix unknown
Version Status Constraints
6.0.0 affected ≤ 6.0.41
7.0.0 affected ≤ 7.0.18
7.2.0 affected ≤ 7.2.12
7.4.0 affected ≤ 7.4.2

Configuration 1 [-]

OR cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*

No data.

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Vendors Products
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Project Subscriptions

Vendors Products
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Frontend Subscribe
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Advisories

No advisories yet.

Fixes

Solution

Update the affected components to their respective fixed versions.

Workaround

No workaround given by the vendor.

References
Link Providers
https://support.zabbix.com/browse/ZBX-27284 cve-icon cve-icon
History

Fri, 06 Feb 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Zabbix frontend
CPEs cpe:2.3:a:zabbix:frontend:*:*:*:*:*:*:*:*
Vendors & Products Zabbix frontend
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Mon, 01 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Zabbix
Zabbix zabbix
Vendors & Products Zabbix
Zabbix zabbix

Mon, 01 Dec 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 01 Dec 2025 13:30:00 +0000

Type Values Removed Values Added
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.
Title Frontend DoS vulnerability due to asymmetric resource consumption
Weaknesses CWE-405
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Zabbix

Published:

Updated: 2025-12-01T14:34:20.496Z

Reserved: 2025-06-09T12:23:32.445Z

Link: CVE-2025-49643

cve-icon Vulnrichment

Updated: 2025-12-01T14:34:11.678Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-01T14:16:06.007

Modified: 2026-02-06T15:28:30.470

Link: CVE-2025-49643

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-01T21:27:33Z

Weaknesses