The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.

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Advisories

No advisories yet.

Fixes

Solution

Update the affected components to their respective fixed versions.


Workaround

Disable item data collection for any Binary items with untrusted input.

History

Mon, 05 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 05 Oct 2026 11:45:00 +0000

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

Mon, 05 Oct 2026 10:45:00 +0000

Type Values Removed Values Added
Description The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.
Title Server DoS via binary items
Weaknesses CWE-787
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Zabbix

Published:

Updated: 2026-10-05T11:50:08.690Z

Reserved: 2026-07-07T08:30:49.859Z

Link: CVE-2026-59783

cve-icon Vulnrichment

Updated: 2026-10-05T11:47:02.917Z

cve-icon NVD

Status : Received

Published: 2026-10-05T11:16:59.513

Modified: 2026-10-05T12:17:09.993

Link: CVE-2026-59783

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T11:30:17Z

Weaknesses