Zabbix Server 7.0.x < 7.0.29 / 7.4.x < 7.4.13 Authentication Bypass (ZBX-28196)

The version of Zabbix Server installed on the remote host is 7.0.x prior to 7.0.29, or 7.4.x prior to 7.4.13. It is, therefore, affected by an authentication bypass vulnerability: - Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate...

Zabbix Proxy 7.0.x < 7.0.29 / 7.4.x < 7.4.13 Authentication Bypass (ZBX-28196)

The version of Zabbix Proxy installed on the remote host is 7.0.x prior to 7.0.29, or 7.4.x prior to 7.4.13. It is, therefore, affected by an authentication bypass vulnerability: - Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate...

CVE-2026-59786

A flaw was found in Zabbix. A remote, unauthenticated attacker with network access to the trapper port can spoof host availability, compromising the integrity of monitoring data. The Zabbix server and proxy accept active agent heartbeat messages without verifying configured pre-shared key PSK or...

CVE-2026-59786

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...

CVE-2026-59786

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...

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 trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity...

CVE-2026-59786

Zabbix Server and Proxy are vulnerable to a flaw where they accept active agent heartbeat messages without performing the required TLS check for configured PSK or certificate authentication. An attacker with access to the Zabbix trapper port can exploit this to report an arbitrary host as availab...

CVE-2026-59786: Improper Verification of Source of a Communication Channel

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...