Tenda Ac8 Firmware

Tenda AC8 <16.03.50.11: HTTP Endpoint Buffer Overflow
CVE-2026-4254 9.8 - Critical - March 16, 2026

A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Stack Overflow

Tenda AC8 16.03.50.11 Remote OS Command Injection via route_set_user_policy_rule
CVE-2026-4253 4.7 - Medium - March 16, 2026

A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function route_set_user_policy_rule of the file /cgi-bin/UploadCfg of the component Web Interface. The manipulation of the argument wans.policy.list1 results in os command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

Shell injection

Tenda AC8 16.03.50.11 IPv6 Handler check_is_ipv6 IP Auth Flaw
CVE-2026-4252 9.8 - Critical - March 16, 2026

A vulnerability was identified in Tenda AC8 16.03.50.11. Affected by this issue is the function check_is_ipv6 of the component IPv6 Handler. The manipulation leads to reliance on ip address for authentication. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Reliance on IP Address for Authentication

Remote Buffer Overflow in Tenda AC8 Httpd (v16.03.34.06)
CVE-2026-3044 8.8 - High - February 23, 2026

A vulnerability has been found in Tenda AC8 16.03.34.06. This affects the function webCgiGetUploadFile of the file /cgi-bin/UploadCfg of the component Httpd Service. The manipulation of the argument boundary 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.

Stack Overflow

Buffer Overflow via timeZone in Tenda AC8 16.03.33.05 Embedded Httpd
CVE-2026-2203 8.8 - High - February 09, 2026

A flaw has been found in Tenda AC8 16.03.33.05. Affected by this vulnerability is an unknown functionality of the file /goform/fast_setting_wifi_set of the component Embedded Httpd Service. This manipulation of the argument timeZone causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Classic Buffer Overflow

Tenda AC8 16.03.33.05 buffer overflow in fromSetWifiGusetBasic via shareSpeed
CVE-2026-2202 8.8 - High - February 09, 2026

A vulnerability was detected in Tenda AC8 16.03.33.05. Affected is the function fromSetWifiGusetBasic of the file /goform/WifiGuestSet of the component httpd. The manipulation of the argument shareSpeed results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.

Classic Buffer Overflow

Tenda AC8 16.03.34.06 Buffer Overflow via /goform/DatabaseIniSet Time
CVE-2025-12618 8.8 - High - November 03, 2025

A vulnerability has been found in Tenda AC8 16.03.34.06. This impacts an unknown function of the file /goform/DatabaseIniSet. 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.

Classic Buffer Overflow

Tenda AC8V4 RCE via Stack Overflow on goform/saveParentControlInfo V16.03.34.06
CVE-2025-51087 - July 24, 2025

Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/saveParentControlInfo. The manipulation of the argument time leads to stack-based buffer overflow.

Tenda AC8V4 RCE via Heap Overflow in /goform/GetParentControlInfo
CVE-2025-51089 - July 24, 2025

Tenda AC8V4 V16.03.34.06` was discovered to contain heap overflow at /goform/GetParentControlInfo.The manipulation of the argument `mac` leads to heap-based buffer overflow.

Stack Overflow Tenda AC8V4 V16.03.34.06 WiFiGuestSet shareSpeed
CVE-2025-51088 - July 24, 2025

Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/WifiGuestSet. The manipulation of the argument `shareSpeed` leads to stack-based buffer overflow.

Tenda AC8V4 V16.03.34.06 stack overflow in /goform/SetSysTimeCfg
CVE-2025-51085 - July 24, 2025

Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/SetSysTimeCfg. The manipulation of the argument `timeZone` and `timeType` leads to stack-based buffer overflow.

Tenda AC8V4 V16.03.34.06 stack overflow at /goform/fast_setting_wifi_set
CVE-2025-51082 - July 24, 2025

Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/fast_setting_wifi_set. The manipulation of the argument `timeZone` leads to stack-based buffer overflow.

Stack Overflow in SetSysTime (Tenda AC8 16.03.34.09)
CVE-2025-5798 8.8 - High - June 06, 2025

A vulnerability was found in Tenda AC8 16.03.34.09. It has been classified as critical. Affected is the function fromSetSysTime of the file /goform/SetSysTimeCfg. The manipulation of the argument timeType 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.

Buffer Overflow

Critical stack overflow in Tenda AC8 16.03.34.09 WifiExtraSet wpapsk_crypto
CVE-2025-5799 8.8 - High - June 06, 2025

A vulnerability was found in Tenda AC8 16.03.34.09. It has been declared as critical. Affected by this vulnerability is the function fromSetWirelessRepeat of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Buffer Overflow

Tenda AC8 16.03.34.06 Remote Critical Buffer Overflow (shareSpeed)
CVE-2025-4368 9.8 - Critical - May 06, 2025

A vulnerability, which was classified as critical, was found in Tenda AC8 16.03.34.06. Affected is the function formGetRouterStatus of the file /goform/MtuSetMacWan. The manipulation of the argument shareSpeed leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Classic Buffer Overflow

Tenda AC8 V16.03.34.06 Buffer Overflow via fromSetRouteStatic
CVE-2025-29100 - March 24, 2025

Tenda AC8 V16.03.34.06 is vulnerable to Buffer Overflow in the fromSetRouteStatic function via the parameter list.

Stack Overflow in Tenda AC8 4.0 Firmware via deviceid
CVE-2025-29101 - March 20, 2025

Tenda AC8V4.0 V16.03.34.06 was discovered to contain a stack overflow via the deviceid parameter in the get_parentControl_list_Info function.

Tenda AC8 v16.03.34.06 Stack Overflow via src param
CVE-2025-29118 - March 19, 2025

Tenda AC8 V16.03.34.06 was discovered to contain a stack overflow via the src parameter in the function sub_47D878.

Tenda AC8 16.03.34.06 Remote Buffer Overflow in Parameter Handler
CVE-2025-1853 9.8 - Critical - March 03, 2025

A vulnerability was found in Tenda AC8 16.03.34.06 and classified as critical. This issue affects the function sub_49E098 of the file /goform/SetIpMacBind of the component Parameter Handler. The manipulation of the argument list leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Buffer Overflow

Tenda AC8 Buffer Overflow in get_parentControl_list_Info (V16.03.34.06)
CVE-2025-25510 - February 21, 2025

Tenda AC8 V16.03.34.06 is vulnerable to Buffer Overflow in the get_parentControl_list_Info function.

Tenda AC8V4 stack overflow via 'urls' param in parentControl_info V16.03.34.06
CVE-2025-25667 9.8 - Critical - February 20, 2025

Tenda AC8V4 V16.03.34.06 was discovered to contain a stack overflow via the urls parameter in the function get_parentControl_list_Info.

Classic Buffer Overflow

Stack Overflow in Tenda AC8V4 via shareSpeed param v16.03.34.06
CVE-2025-25668 9.8 - Critical - February 20, 2025

Tenda AC8V4 V16.03.34.06 was discovered to contain a stack overflow via the shareSpeed parameter in the sub_47D878 function.

Classic Buffer Overflow

Stack buffer overflow in Tenda AC8V4 V16.03.34.06 WiFi config (wpapsk_crypto)
CVE-2025-25663 9.8 - Critical - February 20, 2025

A vulnerability was found in Tenda AC8V4 V16.03.34.06. Affected is the function SUB_0046AC38 of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow.

Memory Corruption

Stack Overflow via shareSpeed in Tenda AC8V4 V16.03.34.06 firmware
CVE-2025-25664 9.8 - Critical - February 20, 2025

Tenda AC8V4 V16.03.34.06 was discovered to contain a stack overflow via the shareSpeed parameter in the sub_49E098 function.

Memory Corruption

Tenda AC8v4 V16.03.34.06 Stack Overflow via setSchedWifi
CVE-2024-57703 9.8 - Critical - January 16, 2025

Tenda AC8v4 V16.03.34.06 has a stack overflow vulnerability. Affected by this vulnerability is the function setSchedWifi of the file /goform/openSchedWifi. The manipulation of the argument schedEndTime leads to stack-based buffer overflow.

Memory Corruption

Stack overflow in Tenda AC8v4 setSchedWifi (v16.03.34.06)
CVE-2024-57704 8.8 - High - January 16, 2025

Tenda AC8v4 V16.03.34.06 has a stack overflow vulnerability. Affected by this vulnerability is the function setSchedWifi of the file /goform/openSchedWifi. The manipulation of the argument schedStartTime leads to stack-based buffer overflow.

Memory Corruption

Tenda AC8 Stack-Based Buffer Overflow in route_static_check Function
CVE-2024-11745 9.8 - Critical - November 26, 2024

A vulnerability was found in Tenda AC8 16.03.34.09 and classified as critical. Affected by this issue is the function route_static_check of the file /goform/SetStaticRouteCfg. The manipulation of the argument list leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Memory Corruption

Tenda AC8 16.03.34.06: Stack Buffer Overflow in formSetRebootTimer
CVE-2024-10130 8.8 - High - October 18, 2024

A vulnerability classified as critical was found in Tenda AC8 16.03.34.06. This vulnerability affects the function formSetRebootTimer of the file /goform/SetSysAutoRebbotCfg. The manipulation of the argument rebootTime 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 vendor was contacted early about this disclosure but did not respond in any way.

Stack Overflow

Tenda AC8 16.03.34.06: Remote Stack Buf Overflow via compare_parentcontrol_time
CVE-2024-10123 8.8 - High - October 18, 2024

A vulnerability was found in Tenda AC8 16.03.34.06. It has been declared as critical. Affected by this vulnerability is the function compare_parentcontrol_time of the file /goform/saveParentControlInfo. 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. This is not the same issue like CVE-2023-33671. The vendor was contacted early about this disclosure but did not respond in any way.

Stack Overflow

Stack Overflow in Tenda AC8v4 (V16.03.34.06) fromAdvSetMacMtuWan
CVE-2024-46652 9.8 - Critical - September 20, 2024

Tenda AC8v4 V16.03.34.06 has a stack overflow vulnerability in the fromAdvSetMacMtuWan function.

Memory Corruption

Tenda AC8 16.03.34.09: Critical Stack BF in /goform/AdvSetMacMtuWan
CVE-2024-4066 8.8 - High - April 23, 2024

A vulnerability classified as critical has been found in Tenda AC8 16.03.34.09. Affected is the function fromAdvSetMacMtuWan of the file /goform/AdvSetMacMtuWan. The manipulation of the argument wanMTU/wanSpeed/cloneType/mac/serviceName/serverName 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-261792. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Memory Corruption

Tenda AC8 16.03.34.09 Remote Stack Buffer Overflow in SetRebootTimer
CVE-2024-4065 8.8 - High - April 23, 2024

A vulnerability was found in Tenda AC8 16.03.34.09. It has been rated as critical. This issue affects the function formSetRebootTimer of the file /goform/SetRebootTimer. The manipulation of the argument rebootTime 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-261791. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Memory Corruption

Stack BO in Tenda AC8 16.03.34.09 R7WebsSecurityHandler
CVE-2024-4064 8.8 - High - April 23, 2024

A vulnerability was found in Tenda AC8 16.03.34.09. It has been declared as critical. This vulnerability affects the function R7WebsSecurityHandler of the file /goform/execCommand. The manipulation of the argument password 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-261790 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Memory Corruption

Tenda AC8V4.0: stack overflow via timeZone param in sub_44db3c
CVE-2023-33669 9.8 - Critical - June 02, 2023

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the timeZone parameter in the sub_44db3c function.

Memory Corruption

Stack Overflow in Tenda AC8 4.0-V16.03.34.06 via time param
CVE-2023-33670 9.8 - Critical - June 02, 2023

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the time parameter in the sub_4a79ec function.

Memory Corruption

Stack Overflow in Tenda AC8 via deviceId param (V4.0)
CVE-2023-33671 9.8 - Critical - June 02, 2023

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the deviceId parameter in the saveParentControlInfo function.

Memory Corruption

Stack Overflow in Tenda AC8 V4.0 via shareSpeed in wifi guest basic
CVE-2023-33672 7.5 - High - June 02, 2023

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the shareSpeed parameter in the fromSetWifiGusetBasic function.

Memory Corruption

Tenda AC8 stack overflow in firewallEn (pre 4.0)
CVE-2023-33673 9.8 - Critical - June 02, 2023

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the firewallEn parameter in the formSetFirewallCfg function.

Memory Corruption

Tenda AC8 v16.03.34.06 Stack Overflow via time param in get_parentControl_list_Info
CVE-2023-33675 9.8 - Critical - June 02, 2023

Tenda AC8V4.0-V16.03.34.06 was discovered to contain a stack overflow via the time parameter in the get_parentControl_list_Info function.

Memory Corruption