CVE-2025-56565: DD-WRT firmware vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
Which deployments are within the documented affected scope?
The documented scope is DD-WRT firmware deployed on TP-Link TL-WR740N hardware revisions v1 through v4.
What level of access does an attacker need to obtain the exposed credentials?
The attacker needs physical access to the device and must obtain an SPI flash dump from its non-volatile memory.
What credentials could be exposed if the device is accessed?
The flash contents may expose SSH private keys, dynamic DNS passwords, email notification credentials, and administrative passwords. Exposure can enable device compromise, access to the connected network, and unauthorized access to dependent third-party services.