CVE-2026-59783

Server DoS via binary items

State: Published
Severity: 2.3 Low
Published: Oct 5, 2026
Updated: Oct 5, 2026
Reserved: Jul 7, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	2.3 Low	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	Zabbix

Weaknesses

CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
ZabbixZabbix	7.0.0 through 7.0.28Affectedfrom 7.0.29Not affected 7.4.0 through 7.4.12Affectedfrom 7.4.13Not affected

References

https://support.zabbix.com/browse/ZBX-28194

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