CVE-2025-49643 - CVE House
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Status published Medium CVE-2025-49643

Frontend DoS vulnerability due to asymmetric resource consumption

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Zabbix wants to thank Pamparau Sebastian (sebiee) for submitting this report on the HackerOne bug bounty platform.

References

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Affected Vendor

Affected Software

Zabbix
Vulnerable Versions:
6.0.0, 7.0.0, 7.2.0, 7.4.0

Timeline

Official Publish: December 1st, 2025
Last Modified: December 1st, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-405

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.