Tenda Ac21 vulnerabilities, page 2
29 vulnerabilities
Known vulnerabilities in Tenda Ac21, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.
HighCVE-2022-40071tenda · ac21_firmwaretenda ac21_firmwareTenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, formSetDeviceName.EPSS1.01%HighCVE-2022-44158tenda · ac21_firmwaretenda ac21_firmwareTenda AC21 V16.03.08.15 is vulnerable to Buffer Overflow via function via set_device_name.EPSS0.85%HighCVE-2022-44163tenda · ac21_firmwaretenda ac21_firmwareTenda AC21 V16.03.08.15 is vulnerable to Buffer Overflow via function formSetMacFilterCfg.EPSS0.85%MediumCVE-2026-2147tenda · ac21_firmwareTenda AC21 Web Management DownloadLog information disclosureA weakness has been identified in Tenda AC21 16.03.08.16. This impacts an unknown function of the file /cgi-bin/DownloadLog of the component Web Management Interface. Executing a manipulation can lead to information disclosure. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.EPSS0.59%HighCVE-2026-2148tenda · ac21_firmwareTenda AC21 Web Management DownloadFlash information disclosureA security vulnerability has been detected in Tenda AC21 16.03.08.16. Affected is an unknown function of the file /cgi-bin/DownloadFlash of the component Web Management Interface. The manipulation leads to information disclosure. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.EPSS0.61%CriticalCVE-2026-1637tenda · ac21_firmwareTenda AC21 AdvSetMacMtuWan fromAdvSetMacMtuWan stack-based overflowA vulnerability was identified in Tenda AC21 16.03.08.16. The affected element is the function fromAdvSetMacMtuWan of the file /goform/AdvSetMacMtuWan. The manipulation leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.EPSS0.71%HighCVE-2026-1638tenda · ac21_firmwareTenda AC21 mDMZSetCfg command injectionA security flaw has been discovered in Tenda AC21 1.1.1.1/1.dmzip/16.03.08.16. The impacted element is the function mDMZSetCfg of the file /goform/mDMZSetCfg. The manipulation of the argument dmzIp results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.EPSS2.23%CriticalCVE-2026-4565tenda · ac21_firmwareTenda AC21 SetNetControlList formSetQosBand buffer overflowA vulnerability was detected in Tenda AC21 16.03.08.16. Impacted is the function formSetQosBand of the file /goform/SetNetControlList. Performing a manipulation of the argument list results in buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.EPSS1.02%HighCVE-2023-24333tenda · ac21_firmwaretenda ac21_firmwareA stack overflow vulnerability in Tenda AC21 with firmware version US_AC21V1.0re_V16.03.08.15_cn_TDC01 allows attackers to run arbitrary commands via crafted POST request to /goform/openSchedWifi.EPSS0.47%