| Title | Tenda A18pro V02.03.02.28 stack |
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| Description | During a security review of the Tenda A18pro router firmware (version V02.03.02.28), a critical stack-based buffer overflow vulnerability was identified in the Wi-Fi configuration endpoint /goform/fast_setting_wifi_set.
The vulnerability exists within the form_fast_setting_wifi_set function. This function retrieves the user-controlled parameter ssid via the websGetVar interface and processes it into a fixed-size stack buffer ssid_5g (64 bytes). Due to the use of the unsafe sprintf function without length validation, an attacker can provide an overly long SSID to overwrite the stack, leading to a Denial of Service (DoS) or arbitrary code execution with root privileges. |
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| Source | ⚠️ https://github.com/lilukun337/cve/issues/1 |
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| User | lilukun (UID 96162) |
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| Submission | 03/06/2026 06:12 (1 month ago) |
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| Moderation | 03/20/2026 09:32 (14 days later) |
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| Status | Accepted |
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| VulDB entry | 352015 [Tenda A18 Pro 02.03.02.28 fast_setting_wifi_set form_fast_setting_wifi_set stack-based overflow] |
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| Points | 20 |
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