| Title | Tenda W3 V1.0.0.3(2204) Buffer Overflow |
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| Description | A stack-based buffer overflow exists in Tenda w3 V1.0.0.3(2204). The HTTP handler formSetCfm reads the POST parameter funcpara1 from the /goform/setcfm endpoint and copies it into a fixed-length stack buffer without proper bounds checking. By sending an overlong funcpara1, an unauthenticated attacker on the LAN can overwrite the stack, corrupting the return address and leading to a crash or potential code execution. The issue is triggered in the request parsing path for funcname=save_list_data with a long funcpara1 payload. |
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| Source | ⚠️ https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-w3-setcfm-funcpara1-buffer-overflow |
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| User | Svigo_o (UID 95970) |
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| Submission | 02/27/2026 15:05 (1 month ago) |
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| Moderation | 03/11/2026 15:01 (12 days later) |
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| Status | Accepted |
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| VulDB entry | 350407 [Tenda W3 1.0.0.3(2204) HTTP /goform/setcfm formSetCfm funcpara1 stack-based overflow] |
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| Points | 20 |
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