CVE-2026-2155
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
A security flaw has been discovered in D-Link DIR-823X 250416. The affected element is the function sub_4208A0 of the file /goform/set_dmz of the component Configuration Handler. The manipulation of the argument dmz_host/dmz_enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
Analysis
Remote code execution in D-Link DIR-823X routers through OS command injection in the DMZ configuration handler allows unauthenticated attackers to execute arbitrary commands on affected devices. The vulnerability exists in the /goform/set_dmz endpoint where the dmz_host and dmz_enable parameters are insufficiently sanitized, and public exploit code is currently available. …
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Remediation
Within 24 hours: Inventory all D-Link DIR-823X 250416 devices in your network and isolate affected units from production environments if possible. Within 7 days: Implement network segmentation to restrict access to administrative interfaces and disable DMZ functionality if not operationally required. …
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External POC / Exploit Code
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