---
id: CVE-2025-14208
title: A security flaw has been discovered in D-Link DIR-823X up to 20250416
summary: >-
  A security flaw has been discovered in D-Link DIR-823X up to 20250416. This
  affects the function sub_415028 of the file /goform/set_wan_settings. The
  manipulation of the argument ppp_username results in command injection. It is
  possible …
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-74
  - CWE-77
vendor: dlink
product: dir-823x_firmware
affected:
  - dir-823x_firmware
published: '2025-12-08'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T22:10:00.210'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14208'
references:
  - url: >-
      https://github.com/panda666-888/vuls/blob/main/d-link/dir-823x/set_wan_settings.md
    label: cna@vuldb.com
  - url: >-
      https://github.com/panda666-888/vuls/blob/main/d-link/dir-823x/set_wan_settings.md#poc
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?ctiid.334651'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?id.334651'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?submit.700499'
    label: cna@vuldb.com
  - url: 'https://www.dlink.com/'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.03392
epssPercentile: 0.88608
ingestedAt: '2026-10-14T23:00:02.014Z'
---

## Overview

A security flaw has been discovered in D-Link DIR-823X up to 20250416. This affects the function sub_415028 of the file /goform/set_wan_settings. The manipulation of the argument ppp_username results in command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be exploited.

## Affected

- `dir-823x_firmware`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.