CVE-2026-51731

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 delVlanCfg function. This vulnerability allows unauthenticated attackers to remove VLAN entries by sending a specially crafted POST request to the /cgi...

CVE-2026-51728

The TOTOLINK T6 wireless dual-band Mesh router (version 4.1.5cu.748_B20211015 ) is vulnerable to an incorrect access control flaw in the UploadFirmwareFile() function. This allows unauthenticated attackers to upload a crafted firmware image by sending a specially crafted POST request to the /cgi-...

CVE-2026-82597: Improper Neutralization of Special Elements used in a Command

A vulnerability was identified in TOTOLINK NR1800X 9.1.0u.6681B20230703. This affects the function setUssd of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ussd leads to command injection. The attack can be initiated remotely. The exploit is publicly available and might be used...

CVE-2026-51675: Improper Access Control

Incorrect access control in the setWanIeCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to reconfigure uplink settings via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51679: Improper Access Control

Incorrect access control in the setPasswordCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to change the administrator account via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51674: Improper Access Control

Incorrect access control in the setScheduleCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to configure forced reboot tasks via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51668: Improper Access Control

Incorrect access control in the setLanguageCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to modify language configuration via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51667: Improper Access Control

Incorrect access control in the getWiFiIpMacTable function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to obtain Wi-Fi client MAC-to-IP mappings via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51733: Improper Access Control

Incorrect access control in the FirmwareUpgrade function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove Wi-Fi schedule entries via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51699: Improper Access Control

Incorrect access control in the setDmzCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to expose an internal host via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51717: Improper Access Control

Incorrect access control in the setOpModeCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to change the device operating mode via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51721: Improper Access Control

Incorrect access control in the setPairCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to alter the mesh pairing state via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51736: Improper Access Control

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

CVE-2026-51706: Improper Access Control

Incorrect access control in the setSmartQosCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to degrade traffic handling via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51712: Improper Access Control

Incorrect access control in the setApWiFiSchCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to alter wireless availability windows via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51725: Improper Access Control

Incorrect access control in the NTPSyncWithHost function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to change the device clock via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51730: Improper Access Control

Incorrect access control in the delWiFiAclRules function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove Wi-Fi ACL rules via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51722: Improper Access Control

Incorrect access control in the setWiFiRepeaterCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to repoint the device to an attacker-controlled upstream Wi-Fi via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51695: Improper Access Control

Incorrect access control in the setDdnsCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to alter dynamic DNS state via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

EUVD-2026-68645

Incorrect access control in the setWiFiMeshConfig function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to alter mesh configurations via sending a crafted POST request to /cgi-bin/cstecgi.cgi...