| Title | D-Link DIR-823X 250416 OS Command Injection |
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| Description | The D-Link DIR-823X router is susceptible to a Remote Command Injection vulnerability via the /goform/set_dmz endpoint. This flaw stems from the backend function sub_4208A0, which fails to adequately filter the newline character (\n or 0x0A) when handling user-submitted dmz_host or dmz_enable parameters. An authenticated attacker can leverage the newline character to truncate the original UCI configuration command and execute arbitrary shell commands with root privileges. |
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| Source | ⚠️ https://github.com/master-abc/cve/issues/32 |
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| User | 942384053 (UID 94603) |
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| Submission | 01/28/2026 14:23 (3 months ago) |
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| Moderation | 02/07/2026 09:26 (10 days later) |
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| Status | Accepted |
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| VulDB entry | 344857 [D-Link DIR-823X 250416 Configuration /goform/set_dmz sub_4208A0 dmz_host/dmz_enable os command injection] |
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| Points | 20 |
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