| Title | D-Link DWR-M920 1.1.50 Code Injection and Buffer 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/formUSSDSetup**. The manipulation of the argument **ussdValue** leads to command injection and Stack Buffer Overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.
The **sub_41CF20** function retrieves the **ussdValue** parameter from the user request. The parameter is passed to the sprintf function without any sanitization and length check, and the result is passed to the system function via sub_41CDBC, which may cause command injection and Stack Buffer Overflow. |
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| Source | ⚠️ https://github.com/7u7777/Dlink/blob/DWR-M920/formUSSDSetup.md |
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| User | kkff33 (UID 62638) |
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| Submission | 05/18/2026 17:50 (21 days ago) |
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| Moderation | 06/05/2026 10:18 (18 days later) |
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| Status | Accepted |
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| VulDB entry | 368881 [D-Link DWR-M920 up to 1.1.50 /boafrm/formUSSDSetup sub_41CF20 ussdValue command injection] |
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| Points | 20 |
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