What is the severity of ZDI-21-976?

The severity of ZDI-21-976 is classified as high due to the potential for information disclosure without authentication.

How do I fix ZDI-21-976?

To fix ZDI-21-976, users should update their D-Link DAP-2020 routers to the latest firmware version provided by the vendor.

Who is affected by ZDI-21-976?

ZDI-21-976 affects installations of D-Link DAP-2020 routers that are accessible to network-adjacent attackers.

Can ZDI-21-976 be exploited remotely?

ZDI-21-976 requires network adjacency, meaning an attacker must be on the same local network to exploit this vulnerability.

What type of vulnerability is ZDI-21-976?

ZDI-21-976 is an information disclosure vulnerability that allows unauthorized access to sensitive data on affected routers.

Vulnerability/
ZDI-21-976

medium

6.5

28/2/2025

ZDI-21-976: D-Link DAP-2020 webproc getpage Directory Traversal Information Disclosure Vulnerability

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the getpage parameter provided to the webproc endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of root.

Affected Software	Affected Version	How to fix
D-Link DAP-2020 Firmware

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Reference Links

Frequently Asked Questions

What is the severity of ZDI-21-976?
The severity of ZDI-21-976 is classified as high due to the potential for information disclosure without authentication.
How do I fix ZDI-21-976?
To fix ZDI-21-976, users should update their D-Link DAP-2020 routers to the latest firmware version provided by the vendor.
Who is affected by ZDI-21-976?
ZDI-21-976 affects installations of D-Link DAP-2020 routers that are accessible to network-adjacent attackers.
Can ZDI-21-976 be exploited remotely?
ZDI-21-976 requires network adjacency, meaning an attacker must be on the same local network to exploit this vulnerability.
What type of vulnerability is ZDI-21-976?
ZDI-21-976 is an information disclosure vulnerability that allows unauthorized access to sensitive data on affected routers.

agent/references
agent/type
agent/softwarecombine
agent/severity
agent/title
agent/event
agent/description
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-21-976
alias/ZDI-CAN-12103
alias/CVE-2021-34860
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/d-link
canonical/d-link dap-2020 firmware

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