CVE-2026-51688

CVE-2026-51688 affects the TOTOLINK T6 router running firmware 4.1.5cu.748_B20211015 . The root cause is an incorrect access control in the setWiFiSignalCfg function, which is exposed via the endpoint /cgi-bin/cstecgi.cgi. An unauthenticated attacker on the network can send a crafted POST request...

PT-2026-83833

Name of the Vulnerable Software and Affected Versions TOTOLINK T6 version 4.1.5cu.748 B20211015 Description Incorrect access control in the setWiFiEasyGuestCf function allows unauthenticated attackers to create or weaken guest wireless access. This is achieved by sending a crafted POST request to...

PT-2026-83825

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

CVE-2026-51690

An incorrect access control vulnerability in the setWanCfg function of TOTOLINK T6 (firmware 4.1.5cu.748_B20211015) allows an unauthenticated remote attacker to alter upstream provisioning and connectivity by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The CVSS 3.1 score is 9.1 (CRITI...

CVE-2026-51713

CVE-2026-51713 affects the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015 ). An incorrect access control flaw in the setManualDialCfg function allows unauthenticated attackers to manipulate the WAN dial state by sending a crafted POST request to /cgi-bin/cstecgi.cgi . The CVSS 3.1 score is 9....

CVE-2026-38577

Tenda HG21 router (version V4.0.0-260302 ) contains insecure hardcoded credentials in its Admin account, allowing a remote, unauthenticated attacker to gain root access to the device. The CVSS 3.1 score is 9.8 (Critical) with a network attack vector and no required privileges. CISA's SSVC assessm...

CVE-2026-51678

CVE-2026-51678 affects the TOTOLINK T6 router, version 4.1.5cu.748_B20211015 . An incorrect access control flaw in the setSyslogCfg function allows an unauthenticated attacker on the adjacent network to alter the device's logging behavior by sending a crafted POST request to /cgi-bin/cstecgi.cgi....

CVE-2026-51740

TOTOLINK T6 firmware 4.1.5cu.748_B20211015 is affected by an incorrect access control flaw in the killProcess function. An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to terminate critical services on the device. The vulnerability is scored CVSS 9.8 (Critical)...

CVE-2026-51684

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...

CVE-2026-51712

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-2026-51713

Incorrect access control in the setManualDialCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to manipulate WAN dial state via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51717

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-2026-51719

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

CVE-2026-51717

TOTOLINK T6 firmware 4.1.5cu.748_B20211015 contains an incorrect access control flaw in the setOpModeCfg function, allowing unauthenticated attackers to change the device's operating mode by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The CVSS 3.1 score is 9.1 (Critical) with high con...

PT-2026-83875

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

CVE-2026-51733

An incorrect access control flaw in the FirmwareUpgrade function of the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015) allows an unauthenticated remote attacker to remove Wi-Fi schedule entries by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The vulnerability is rated CVSS 9.8 (CR...

EUVD-2026-68537

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-2026-51729

CVE-2026-51729 affects the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015 ). The root cause is an incorrect access control in the delDevice function, reachable via a crafted POST request to /cgi-bin/cstecgi.cgi , which allows an unauthenticated attacker to request deletion of a managed slave ...

EUVD-2026-68750

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...

PT-2026-83836

Name of the Vulnerable Software and Affected Versions TOTOLINK T6 version 4.1.5cu.748 B20211015 Description Incorrect access control in the setWanCfg function allows unauthenticated attackers to alter upstream provisioning and connectivity. This is achieved by sending a crafted POST request to th...