CVE-2020-27864: D-Link DAP-1860 HNAP Authorization Command Injection Remote Code Execution Vulnerability

Q: What is the vulnerability ID for this D-Link DAP-1860 vulnerability?

The vulnerability ID for this D-Link DAP-1860 vulnerability is CVE-2020-27864.

Q: What is the severity of CVE-2020-27864?

The severity of CVE-2020-27864 is high with a CVSS score of 8.8.

Q: Is authentication required to exploit CVE-2020-27864?

No, authentication is not required to exploit CVE-2020-27864.

Q: What is the recommended solution for this vulnerability?

D-Link has released a firmware update to address this vulnerability. It is recommended to update to version 1.04B04 or later.

Published Feb 11, 2021

Updated

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HNAP service, which listens on TCP port 80 by default. When parsing the Authorization request header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-10880.

Other sources

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 WiFi extenders. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HNAP service, which listens on TCP port 80 by default. When parsing the Authorization request header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the device.

Affected Software

3 affected components

Dlink Dap-1860 Firmware<=1.04b03

Dlink Dap-1860=ax

D-Link DAP-1860

Event History

Feb 11, 2021

CVE Published

via MITRE·11:35 PM

Data Sourced

via MITRE·11:35 PM

DescriptionSeverityWeakness

Mar 28, 2025

Advisory Published

via ZDI·12:10 AM

Frequently Asked Questions

What is the vulnerability ID for this D-Link DAP-1860 vulnerability?

The vulnerability ID for this D-Link DAP-1860 vulnerability is CVE-2020-27864.

What is the severity of CVE-2020-27864?

The severity of CVE-2020-27864 is high with a CVSS score of 8.8.

How does this vulnerability allow attackers to execute arbitrary code?

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1860 firmware version 1.04B03 WiFi extenders.

Is authentication required to exploit CVE-2020-27864?