CVE-2026-59786 — Active agent heartbeat missing TLS check
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 tr…
Published: 2026-10-05 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7