| Title | Tenda AC9 AC9 V1.0 V15.03.02.13 Buffer Overflow |
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| Description | In Tenda AC9 V1.0 V15.03.02.13 firmware has a stack overflow vulnerability located in the fromWizardHandle function. This function accepts the WANTand WANS parameter from a POST request. Within case 2, this function accepts the PPW parameter from a POST request, which is assigned to decodePwd(pppoepwd, decode_pwd);. However, since the user has control over the input of PPW, the function decodePwd() leads to a buffer overflow. The user-supplied PPW can exceed the capacity of the decode_pwd array, thus triggering this security vulnerability. |
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| Source | ⚠️ https://lavender-bicycle-a5a.notion.site/Tenda-AC9-WizardHandle-33153a41781f808480f9e3b78ce438e0?source=copy_link |
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| User | wxhwxhwxh_mie (UID 66748) |
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| Submission | 03/28/2026 09:25 (4 months ago) |
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| Moderation | 04/09/2026 16:38 (12 days later) |
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| Status | Accepted |
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| VulDB entry | 356572 [Tenda AC9 15.03.02.13 POST Request /goform/WizardHandle decodePwd WANS stack-based overflow] |
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| Points | 17 |
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