CVE-2026-85031

TOTOLINK CP450 firmware version 4.1.0 contains a buffer overflow in an unknown function of /cgi-bin/cstecgi.cgi, triggered by manipulating the topicurl argument. Remote exploitation is possible. The vulnerability is rated CVSS 3.1: 9.9 (Critical) with a scope change and high impact to confidentia...

EUVD-2026-70313

A vulnerability was found in TOTOLINK CP450 4.1.0. The impacted element is an unknown function of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument topicurl results in buffer overflow. Remote exploitation of the attack is possible...

CVE-2026-85031 TOTOLINK CP450 cstecgi.cgi buffer overflow

A vulnerability was found in TOTOLINK CP450 4.1.0. The impacted element is an unknown function of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument topicurl results in buffer overflow. Remote exploitation of the attack is possible...

CVE-2026-51770

Incorrect access control in the sendToMasterQosConfig function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to forward attacker-controlled QoS settings to the master via sending a crafted MQTT message to the csbroker component...

CVE-2026-51769

Incorrect access control in the remoteCloudUpdateCheck function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to restart the cloud update check workflow via sending a crafted MQTT message to the csbroker component...

CVE-2026-51768

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-2026-51767

Incorrect access control in the recvClearPairCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to reset pairing state and reboot the device via sending a crafted MQTT message to the csbroker component...

CVE-2026-51766

Incorrect access control in the setDevReboot function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to reboot the local device and, on a master, fan out reboot commands to mesh slaves via sending a crafted MQTT message to the csbroker component...

CVE-2026-51764

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-2026-51757

Incorrect access control in the meshSlaveUpdate function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to start a firmware download or flash workflow on the slave device via sending a crafted MQTT message to the csbroker component...

CVE-2026-51761

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-2026-51762

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-2026-51754

Incorrect access control in the updateSlaveIpList function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to overwrite the slave IP inventory state via sending a crafted MQTT message to the csbroker component...

CVE-2026-51763

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-2026-51765

Incorrect access control in the recvIndirectMeshInfo function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to insert or replace mesh neighbor records via sending a crafted MQTT message to the csbroker component...

CVE-2026-51756

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-2026-51760

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...

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...

CVE-2026-51750

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-2026-51748

Incorrect access control in the sendStaticInfoToMaster function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to update stored slave inventory records via sending a crafted MQTT message to the csbroker component...