CVE-2026-51743

Incorrect access control in the guestwifisync function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to disable guest virtual AP interfaces via sending a crafted MQTT message to the csbroker component...

CVE-2026-51751: Improper Access Control

Incorrect access control in the delSlaveDevice function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove a specified slave device from local mesh management data and reboot the system via sending a crafted MQTT message to the csbroker component...

CVE-2026-51752

Incorrect access control in the staticInfoSend function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to trigger static information reporting to the configured master via sending a crafted MQTT message to the csbroker component...

EUVD-2026-69197

Incorrect access control in the meshInfoKick function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to kick or clean stale mesh information/state and trigger regeneration of mesh metadata via sending a crafted MQTT message to the csbroker component...

CVE-2026-51752

Incorrect access control in the staticInfoSend function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to trigger static information reporting to the configured master via sending a crafted MQTT message to the csbroker component...

CVE-2026-51743

Incorrect access control in the guestwifisync function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to disable guest virtual AP interfaces via sending a crafted MQTT message to the csbroker component...

CVE-2026-51741

Incorrect access control in the clearDiagnosisLog function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to erase diagnosis logs via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51742

The TOTOLINK T6 wireless dual-band Mesh router (firmware version 4.1.5cu.748_B20211015 ) is vulnerable to an incorrect access control flaw in the discoverWan function. An unauthenticated attacker can exploit this by sending a specially crafted POST request to /cgi-bin/cstecgi.cgi , which triggers...

CVE-2026-51762

The TOTOLINK T6 wireless dual-band Mesh router (firmware version 4.1.5cu.748_B20211015 ) is vulnerable to an incorrect access control flaw in the meshInfoKick function. An unauthenticated attacker can exploit this by sending a crafted MQTT message to the cs_broker component. This allows the attac...

CVE-2026-51748

The TOTOLINK T6 running firmware version 4.1.5cu.748_B20211015 is vulnerable to an incorrect access control flaw in the sendStaticInfoToMaster function. This vulnerability allows unauthenticated attackers to update stored slave inventory records by sending a crafted MQTT message to the cs_broker ...

EUVD-2026-69205

Incorrect access control in the updatePriChannel function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to rescan and switch the primary mesh channel via sending a crafted MQTT message to the csbroker component...

CVE-2026-51768: Improper Access Control

Incorrect access control in the setElinkQosConfig function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to modify privileged QoS policy on the master device via sending a crafted MQTT message to the csbroker component...

CVE-2026-51751

Incorrect access control in the delSlaveDevice function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove a specified slave device from local mesh management data and reboot the system via sending a crafted MQTT message to the csbroker component...

EUVD-2026-69195

Incorrect access control in the recvSlaveCloudCheckStatus function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to overwrite cloud-result tracking files via sending a crafted MQTT message to the csbroker component...

CVE-2026-51763: Improper Access Control

Incorrect access control in the freeStaClient function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to forcibly disconnect wireless clients via sending a crafted MQTT message to the csbroker component...

CVE-2026-51756: Improper Access Control

Incorrect access control in the meshSlaveUpgfw function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to start firmware flashing using existing upgrade files via sending a crafted MQTT message to the csbroker component...

CVE-2026-51761: Improper Access Control

Incorrect access control in the updateLanIp function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to refresh the LAN address state via sending a crafted MQTT message to the csbroker component...

CVE-2026-51747: Improper Access Control

Incorrect access control in the keepAlive function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to emit indirect mesh heartbeat information toward the master via sending a crafted MQTT message to the csbroker component...

CVE-2026-51760: Improper Access Control

Incorrect access control in the informSyncUpgfw function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to mass-trigger firmware update activity across mesh slaves via sending a crafted MQTT message to the csbroker component...

PT-2026-84207

Incorrect access control in the keepAlive function of TOTOLINK T6 4.1.5cu.748 B20211015 allows unauthenticated attackers to emit indirect mesh heartbeat information toward the master via sending a crafted MQTT message to the cs broker component...