| Title | D-Link DWR-M921 V1.1.50 Command Injection |
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| Description | During a security review of the D-Link DWR-M921 router firmware, a critical command injection vulnerability was identified in the `/bin/boa` binary).
[cite_start]The vulnerability is located in the function `sub_419920` (as identified in IDA Pro), which handles requests for the `/boafrm/formLtefotaUpgradeQuectel` endpoint. The function retrieves the `fota_url` parameter from the user input. [cite_start]While it checks if the input contains "http://", "https://", or "ftp://", it fails to strictly filter or sanitize the string before passing it to `sprintf` to construct a shell command. |
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| Source | ⚠️ https://github.com/LX-66-LX/cve-new/issues/2 |
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| User | LX-66-LX (UID 92717) |
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| Submission | 01/29/2026 13:35 (3 months ago) |
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| Moderation | 02/07/2026 11:31 (9 days later) |
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| Status | Accepted |
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| VulDB entry | 344870 [D-Link DWR-M921 1.1.50 formLtefotaUpgradeQuectel sub_419920 fota_url command injection] |
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| Points | 20 |
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