ZDI-CAN-19549: ZDI-23-544: D-Link DIR-2640 HNAP LoginPassword Authentication Bypass Vulnerability
Published May 4, 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 Software
1 affected component
D-Link DIR-2640
Event History
May 4, 2023
Advisory Published
05:00 AM
Data Sourced
05:00 AM
Description
Feb 21, 2025
Advisory Published
via ZDI·07:27 PM
Frequently Asked Questions
1
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.
2
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.
3
Who is affected by ZDI-CAN-19549?
Affected users are those operating D-Link DIR-2640 routers with the vulnerable firmware installed.
4
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.
5
Is ZDI-CAN-19549 easy to exploit?
Yes, ZDI-CAN-19549 is easy to exploit as it requires no authentication for network-adjacent attackers.