Multiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20multi?AC5V1.0 Firmware V15.03.06.48multi and so on. an attacker can obtain sensitive information, and even combine it with authenticated command injection to implement RCE.

A vulnerability has been found in Tenda AC15 15.03.05.19. This affects the function formSetCfm of the file /goform/setcfm of the component POST Request Handler. The manipulation of the argument funcpara1 leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

An issue was discovered in goform/formsetUsbUnload in Tenda AC15V1.0 V15.03.05.18multi. The value of v1 was not checked, potentially leading to a command injection vulnerability if injected into doSystemCmd.

A buffer overflow vulnerability was discovered in goform/formSetMacFilterCfg in Tenda AC15V1.0 V15.03.05.18multi.

An issue was discovered in goform/formSetIptv in Tenda AC15V1.0 V15.03.05.18multi. When the condition is met, s11 will be passed into subB0488, concatenated into doSystemCmd. The value of s11 is not validated, potentially leading to a command injection vulnerability.

A vulnerability was found in Tenda AC15 15.03.05.19multi and classified as critical. Affected by this issue is the function formSetPPTPUserList of the file /goform/setPptpUserList of the component HTTP POST Request Handler. The manipulation of the argument list leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

A vulnerability was found in Tenda AC15 15.03.05.19multi. It has been classified as critical. This affects the function formSetSafeWanWebMan of the file /goform/SetRemoteWebCfg of the component HTTP POST Request Handler. The manipulation of the argument remoteIp leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

A vulnerability was found in Tenda AC15 15.03.05.19multi. It has been declared as critical. This vulnerability affects the function formsetschedled of the file /goform/SetLEDCf of the component HTTP POST Request Handler. The manipulation of the argument Time leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

A vulnerability was found in Tenda AC15 15.03.05.19multi. It has been rated as critical. This issue affects the function fromadvsetlanip of the file /goform/AdvSetLanip of the component HTTP POST Request Handler. The manipulation of the argument lanMask leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

A vulnerability classified as critical was found in Tenda AC15 15.03.05.18/15.03.20multi. This vulnerability affects the function formExpandDlnaFile of the file /goform/expandDlnaFile. The manipulation of the argument filePath leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-257662 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Tenda AC15V1.0 V15.03.20multi has a command injection vulnerability via the deviceName parameter.

Tenda AC15 V1.0BRV15.03.05.18multiTD01 was discovered to contain a buffer overflow via the function FUN00010e34().

A vulnerability classified as critical has been found in Tenda AC15 15.03.05.18/15.03.20multi. This affects the function addWifiMacFilter of the file /goform/addWifiMacFilter. The manipulation of the argument deviceId/deviceMac leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-257661 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability, which was classified as critical, has been found in Tenda AC15 15.03.05.18/15.03.20multi. This issue affects the function formQuickIndex of the file /goform/QuickIndex. The manipulation of the argument PPPOEPassword leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-257663. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability has been found in Tenda AC15 15.03.05.18/15.03.20multi and classified as critical. Affected by this vulnerability is the function formWifiWpsOOB of the file /goform/WifiWpsOOB. The manipulation of the argument index leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-257665 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Tenda AC15 USAC15V1.0BRV15.03.05.20multiTDE01.bin is vulnerable to Buffer Overflow. The stack overflow vulnerability lies in the /goform/setpptpservercfg interface of the web. The sent post data startip and endip are copied to the stack using the sanf function, resulting in stack overflow. Similarly, this vulnerability can be used together with CVE-2021-44971

There is a command injection vulnerability at the /goform/setsambacfg interface of Tenda AC15 USAC15V1.0BRV15.03.05.20multiTDE01.bin device web, which can also cooperate with CVE-2021-44971 to cause unconditional arbitrary command execution

A vulnerability, which was classified as critical, was found in Tenda AC15 15.03.05.18/15.03.20multi. Affected is the function formSetFirewallCfg of the file /goform/SetFirewallCfg. The manipulation of the argument firewallEn leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-257664. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Tenda AC15 15.03.05.18/15.03.20multi. It has been classified as critical. This affects the function formWriteFacMac of the file /goform/WriteFacMac. The manipulation of the argument mac leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-257667. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Tenda AC15 15.03.20multi. It has been declared as critical. This vulnerability affects the function saveParentControlInfo of the file /goform/saveParentControlInfo. The manipulation of the argument urls leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-257776. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability classified as critical was found in Tenda AC15 15.03.05.18/15.03.05.19/15.03.20. Affected by this vulnerability is the function fromSetSysTime of the file /goform/SetSysTimeCfg. The manipulation of the argument time leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-257779. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.