---
id: CVE-2025-56565
title: >-
  DD-WRT firmware, as deployed on TP-Link TL-WR740N v1 through v4 hardware,
  stores sensitive authentication credentials in cleartext within non-volatile
  memory
summary: >-
  DD-WRT firmware, as deployed on TP-Link TL-WR740N v1 through v4 hardware,
  stores sensitive authentication credentials in cleartext within non-volatile
  memory. The exposed material includes SSH private keys, dynamic DNS passwords,
  email n…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-312
  - CWE-316
published: '2026-09-16'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:56:19.073'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-56565'
references:
  - url: >-
      https://github.com/RIFTI-Offensive-Security/security-advisories/blob/main/CVE-2025-56565.md
    label: cve@mitre.org
  - url: 'https://wiki.dd-wrt.com/wiki/index.php/TP-LINK_TL-WR740N'
    label: cve@mitre.org
  - url: >-
      https://github.com/RIFTI-Offensive-Security/security-advisories/blob/main/CVE-2025-56565.md
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00192
epssPercentile: 0.07804
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-22T16:05:07.746884Z'
ingestedAt: '2026-09-16T21:05:36.909Z'
---

## Overview

DD-WRT firmware, as deployed on TP-Link TL-WR740N v1 through v4 hardware, stores sensitive authentication credentials in cleartext within non-volatile memory. The exposed material includes SSH private keys, dynamic DNS passwords, email notification credentials and administrative passwords. An attacker with physical access to the device can extract these credentials from an SPI flash dump, leading to device compromise, infiltration of the connected network and unauthorised access to dependent third-party services.

## Remediation

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