ZDI-CAN-16152: D-Link DIR-1935 HNAP Incorrect Comparison Authentication Bypass Vulnerability

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from an incorrectly implemented comparison. An attacker can leverage this vulnerability to bypass authentication on the system.

Affected Software

1 affected component
D-Link DIR-1935

Event History

Mar 26, 2025
Advisory Published
via ZDI·10:24 AM
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Frequently Asked Questions

1

What is the severity of ZDI-CAN-16152?

The severity of ZDI-CAN-16152 is critical due to the potential for unauthorized access.

2

How do I fix ZDI-CAN-16152?

To fix ZDI-CAN-16152, update your D-Link DIR-1935 router to the latest firmware version provided by D-Link.

3

Who is affected by ZDI-CAN-16152?

ZDI-CAN-16152 affects D-Link DIR-1935 routers that have not been patched.

4

What type of attacks does ZDI-CAN-16152 allow?

ZDI-CAN-16152 allows network-adjacent attackers to bypass authentication on the affected routers.

5

Is authentication required to exploit ZDI-CAN-16152?

No, authentication is not required to exploit ZDI-CAN-16152.

Contact

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