---
id: "CVE-2011-4723"
kind: "vulnerability"
aliases: ["CVE-2011-4723"]
title: "dlink dir-300 firmware: The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive\u2026"
severity: "high"
cvss: 6.8
epss: 0.03064
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "D-Link DIR-300 Router", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "dlink dir-300 firmware", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["d-link", "dir-300", "exploited", "home-router", "infrastructure", "self-hosted"]
not_affected_if: ["no-dir-300-in-use"]
published_at: "2011-12-20T11:55:08+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2011-4723", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2011-4723", "first_seen_at": "2026-10-23T19:13:45+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-4723", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# dlink dir-300 firmware: The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive…

The D-Link DIR-300 router stores passwords in cleartext on the device. An attacker who can reach its stored configuration can read the passwords and use them.

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

## Affected

- vendor:D-Link DIR-300 Router affected ? fixed ?
- vendor:dlink dir-300 firmware affected ? fixed ?

## How to check

Identify any D-Link DIR-300 routers on your network, e.g. by model label or admin interface.

## Fix

The product is end-of-life and CISA says to disconnect it if still in use. No patched version is given in the sources.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2011-4723
- 2026-10-23T19:13:45+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2011-4723
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2011-4723

## From the sources

The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information.

CISA required action: The impacted product is end-of-life and should be disconnected if still in use.

---

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