CVE-2026-51728

Incorrect access control in the UploadFirmwareFile function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to upload a crafted firmware image via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

PT-2026-83834

Name of the Vulnerable Software and Affected Versions TOTOLINK T6 version 4.1.5cu.748 B20211015 Description Incorrect access control in the setWiFiSignalCfg function allows unauthenticated attackers to reduce wireless power or cause a Denial of Service DoS, which is a condition where the service...

CVE-2026-51731

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

EUVD-2026-68879

Insecure hardcoded credentials in the Admin account of Tenda HG21 V4.0.0-260302 allows attackers to gain root access...

CVE-2026-51723

CVE-2026-51723 is an incorrect access control vulnerability in the UploadCustomModule function of the TOTOLINK T6 router (version 4.1.5cu.748_B20211015). An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to install a custom CGI module on the device. The CVSS 3.1 ...

PT-2026-83892

Incorrect access control in the delStaticDhcpRules function of TOTOLINK T6 4.1.5cu.748 B20211015 allows unauthenticated attackers to remove static DHCP reservations via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51681

An incorrect access control flaw in the setRemoteCfg function of the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015) allows an unauthenticated attacker to send a crafted POST request to /cgi-bin/cstecgi.cgi , thereby exposing the device's WAN-side administration interface. The vulnerability i...

CVE-2026-51693

CVE-2026-51693 is a critical access-control flaw in the setVpnPassCfg function of the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015 ). An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to weaken the router's edge filtering. The flaw carries a CVSS 3.1 score ...

CVE-2026-51666

TOTOLINK T6 (firmware 4.1.5cu.748_B20211015 ) contains an incorrect access control flaw in the setWizardCfg function. An unauthenticated attacker on the adjacent network can send a crafted POST request to /cgi-bin/cstecgi.cgi to reconfigure WAN, Wi-Fi, and device initialization state , with low i...

PT-2026-83835

Name of the Vulnerable Software and Affected Versions TOTOLINK T6 version 4.1.5cu.748 B20211015 Description Incorrect access control in the setUpgradeFW function allows unauthenticated attackers to trigger firmware-upgrade workflow changes. This is achieved by sending a crafted POST request to th...

EUVD-2026-68652

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

CVE-2026-51684

TOTOLINK T6 running firmware version 4.1.5cu.748_B20211015 is affected by an incorrect access control flaw in the setStorageCfg function. An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to alter the storage-related service state, with no user interaction requir...

EUVD-2026-68531

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-2026-51737

TOTOLINK T6 routers running firmware 4.1.5cu.748_B20211015 contain an incorrect access control flaw in the clearTracerouteLog function. An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to erase traceroute logs, enabling concealment of reconnaissance activity. Th...

CVE-2026-51705

TOTOLINK T6 routers running firmware 4.1.5cu.748_B20211015 contain an incorrect access control flaw in the setWiFiMeshName function. An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to rename mesh entries , with a CVSS 3.1 score of 9.8 (CRITICAL) reflecting high...

CVE-2026-51709

CVE-2026-51709 is an incorrect access control vulnerability in the setWiFiBasicCfg function of the TOTOLINK T6 router, firmware 4.1.5cu.748_B20211015 . Unauthenticated attackers can reconfigure primary Wi-Fi settings by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The CNA-assigned CVSS...

CVE-2026-51699

CVE-2026-51699 is an incorrect access control flaw in the setDmzCfg function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015 . An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to expose an internal host , effectively bypassing DMZ configuration controls. T...

CVE-2026-51735

An incorrect access control flaw in the showSyslog function of TOTOLINK T6 (firmware 4.1.5cu.748_B20211015) allows unauthenticated attackers to retrieve recent system logs by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The CVSS 3.1 score is 7.5 (High) , reflecting a network-reachable,...

CVE-2026-51739

CVE-2026-51739 affects the TOTOLINK T6 router running firmware version 4.1.5cu.748_B20211015 . The vulnerability is an incorrect access control in the CloudSrvVersionCheck function, which allows unauthenticated attackers to trigger cloud update checks by sending a crafted POST request to /cgi-bin...

EUVD-2026-68580

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