| Title | D-Link DWR-M920 1.1.50,1.1.70 Command Injection and stack overflow |
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| Description | A vulnerability has been found in D-Link DWR-M920 V1.1.50、V1.1.70. This vulnerability can be triggered through the route /boafrm/formSmsManage. The manipulation of the argument action_value leads to stack overflow and command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.
The **sub_41C8E8** function retrieves the **action_value** parameter from the user request. The parameter is passed to the sprintf function without any length check, which may overflow the stack-based buffer result. Then, the result variable is passed to the system function without any check, which may cause command injection.
The **sub_41C9F4** function retrieves the **action_value** parameter from the user request. The parameter is passed to the sprintf function without any length check, which may overflow the stack-based buffer v2. Then, the v2 variable is passed to the system function without any check, which may cause command injection. |
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| Source | ⚠️ https://github.com/7u7777/Dlink/blob/DWR-M920/formSmsManage.md |
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| User | kkff33 (UID 62638) |
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| Submission | 05/17/2026 22:27 (23 days ago) |
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| Moderation | 06/04/2026 17:40 (18 days later) |
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| Status | Accepted |
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| VulDB entry | 368368 [D-Link DWR-M920 1.1.50/1.1.70 /boafrm/formSmsManage sub_41C8E8 action_value command injection] |
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| Points | 20 |
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