CVE-2026-59786 — Active agent heartbeat missing TLS check

CVE-2026-59786

Active agent heartbeat missing TLS check PUBLISHED

Description (CNA)

Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity.

Affected (CNA)

Vendor / product	Versions
Zabbix / Zabbix	affected 7.0.0 through 7.0.28; affected 7.4.0 through 7.4.12

CWE

CWE-940

References

https://support.zabbix.com/browse/ZBX-28196

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.