| Title | TOTOLINK A3002MU A3002MU_Hh-B20211125.1046 Stack-based Buffer Overflow |
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| Description | In the binary file `/bin/boa`, the function formWlanSetup obtains the value of the **`wan-url`** parameter from the front-end HTTP request **without performing any length validation**. Subsequently, the value is copied into a **fixed-size buffer** using an unsafe string copy operation.
If an attacker sends a sufficiently long `wan-url` string, it will overflow the buffer and corrupt adjacent memory regions, resulting in a **buffer overflow vulnerability**. Successful exploitation could lead to denial of service (DoS) . |
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| Source | ⚠️ https://github.com/zhuchan770/vulnerability/blob/main/A3002MU/formWlanSetup/ToToLinkA3002MU%20formWlanSetup%20339996b67c9780caafb2d351dfd8a889.md |
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| User | DLChen (UID 97003) |
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| Submission | 04/05/2026 19:45 (3 months ago) |
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| Moderation | 04/13/2026 10:43 (8 days later) |
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| Status | Accepted |
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| VulDB entry | 357116 [Totolink A3002MU B20211125.1046 HTTP Request /boafrm/formWlanSetup sub_410188 wan-url stack-based overflow] |
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| Points | 20 |
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