CVE-2026-51631

MediumCVSS 4.3

Published: 28/08/2026(UTC)Updated: 01/09/2026(UTC)Translated: 29/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.20%

10th percentile - higher than 10% of all known CVEs

Summary

Incorrect access control in the getStaticDhcpRules function of TOTOLINK T6 allows unauthenticated attackers to obtain WPS runtime status via a crafted POST request to /cgi-bin/cstecgi.cgi.

Risk Assessment

Disclosure of WPS status may allow an attacker to exploit WPS weaknesses to gain access to the Wi-Fi network.

Recommendation

Update the router firmware and disable WPS if not in use.

Other vulnerabilities in TOTOLINK T6

See all

CVE-2026-51770Critical
Incorrect access control in the sendToMasterQosConfig function of TOTOLINK T6 (version 4.1.5cu.748_B20211015) allows unauthenticated attackers to forward attacker-controlled QoS settings to the master via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51769Critical
Incorrect access control in the remoteCloudUpdateCheck function of TOTOLINK T6 (version 4.1.5cu.748_B20211015) allows unauthenticated attackers to restart the cloud update check workflow via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51767Critical
Incorrect access control in the recvClearPairCfg function of TOTOLINK T6 (version 4.1.5cu.748_B20211015) allows unauthenticated attackers to reset pairing state and reboot the device via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51765Critical
Incorrect access control in the recvIndirectMeshInfo function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to insert or replace mesh neighbor records via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51764Critical
Incorrect access control in the recvSlaveCloudCheckStatus function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to overwrite cloud-result tracking files via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51763Critical
Incorrect access control in the freeStaClient function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to forcibly disconnect wireless clients via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51762Critical
Incorrect access control in the meshInfoKick function of TOTOLINK T6 4.1.5cu.748_B20211015 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 cs_broker component.
CVE-2026-51760Critical
Incorrect access control in the informSyncUpgfw function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to mass-trigger firmware update activity across mesh slaves via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51757Critical
Incorrect access control in the meshSlaveUpdate function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to start a firmware download or flash workflow on the slave device via sending a crafted MQTT message to the cs_broker component.
CVE-2026-51754Critical
Incorrect access control in the updateSlaveIpList function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to overwrite the slave IP inventory state via sending a crafted MQTT message to the cs_broker component.

Original NVD description (English source)

Incorrect access control in the getStaticDhcpRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain WPS runtime status via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS