---
id: "CVE-2025-29635"
kind: "vulnerability"
aliases: ["CVE-2025-29635"]
title: "dlink dir-823x firmware: A command injection vulnerability in D-Link DIR-823X 240126 and 240802 allows an authorized attacker to execute\u2026"
severity: "high"
cvss: 7.2
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "D-Link DIR-823X", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "dlink dir-823x firmware", "fixed": [], "affected": "= 240126", "ecosystem": "vendor"}, {"name": "dlink dir-823x firmware", "fixed": [], "affected": "= 240802", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["d-link", "dir-823x", "exploited", "infrastructure", "routers", "small-office"]
not_affected_if: ["no-dir-823x-deployed"]
published_at: "2025-03-25T14:15:29+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T23:44:51+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-29635", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-29635", "first_seen_at": "2026-10-23T23:44:51+00:00"}]
---

# dlink dir-823x firmware: A command injection vulnerability in D-Link DIR-823X 240126 and 240802 allows an authorized attacker to execute…

D-Link DIR-823X home routers have a command injection flaw in the /goform/set_prohibiting endpoint. An attacker with valid access can run arbitrary commands on the device, and CISA reports it is being exploited in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:D-Link DIR-823X affected ? fixed ?
- vendor:dlink dir-823x firmware affected = 240126 fixed ?
- vendor:dlink dir-823x firmware affected = 240802 fixed ?

## How to check

Check whether any D-Link DIR-823X router is in use on the network, including at remote or branch sites.

## Fix

Discontinue use of the device if no vendor mitigation is available, since the product may be end-of-life or end-of-service.
Apply vendor mitigations per D-Link instructions if they exist.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-29635
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-29635

## From the sources

D-Link DIR-823X contains a command injection vulnerability that allows an authorized attacker to execute arbitrary commands on remote devices by sending a POST request to /goform/set_prohibiting via the corresponding function. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_