Advisory Published
Advisory Published

ZDI-CAN-19549: ZDI-23-544: D-Link DIR-2640 HNAP LoginPassword Authentication Bypass Vulnerability

First published: Thu May 04 2023(Updated: )

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-2640 routers. Authentication is not required to exploit this vulnerability.

Affected SoftwareAffected VersionHow to fix
D-Link DIR-2640 Firmware

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Frequently Asked Questions

  • What is the severity of ZDI-CAN-19549?

    The severity of ZDI-CAN-19549 is high due to the ability of network-adjacent attackers to bypass authentication.

  • How can I fix ZDI-CAN-19549?

    To fix ZDI-CAN-19549, update the D-Link DIR-2640 router firmware to the latest version provided by the manufacturer.

  • Who is affected by ZDI-CAN-19549?

    Affected users are those operating D-Link DIR-2640 routers with the vulnerable firmware installed.

  • What are the potential impacts of ZDI-CAN-19549?

    The potential impacts of ZDI-CAN-19549 include unauthorized access to network resources and sensitive data.

  • Is ZDI-CAN-19549 easy to exploit?

    Yes, ZDI-CAN-19549 is easy to exploit as it requires no authentication for network-adjacent attackers.

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