What is the severity of CVE-2021-27249?

The severity of CVE-2021-27249 is high with a CVSS score of 8.8.

Is authentication required to exploit CVE-2021-27249?

No, authentication is not required to exploit CVE-2021-27249.

Which software versions of D-Link DAP-2020 are affected by CVE-2021-27249?

D-Link DAP-2020 v1.01rc001 is affected by CVE-2021-27249.

How can I fix the vulnerability in D-Link DAP-2020?

To fix the vulnerability in D-Link DAP-2020, update the firmware to version 1.01rc001 or later as per the vendor's recommendation.

Vulnerability/
CVE-2021-27249

high

8.8

CWE

14/4/2021

3/8/2024

CVE-2021-27249: D-Link DAP-2020 WEB_CmdFileList Command Injection Remote Code Execution Vulnerability

First published: Wed Apr 14 2021(Updated: )

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. The issue results from the lack of proper validation of 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 root. Was ZDI-CAN-11369.

Credit: zdi-disclosures@trendmicro.com zdi-disclosures@trendmicro.com

Affected Software	Affected Version	How to fix
D-Link DAP-2020	=1.01-rc001
D-Link DAP-2020
D-Link DAP-2020	=1.01-rc001

Remedy

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-27249?
The severity of CVE-2021-27249 is high with a CVSS score of 8.8.
How does CVE-2021-27249 allow attackers to execute arbitrary code?
CVE-2021-27249 allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001.
Is authentication required to exploit CVE-2021-27249?
No, authentication is not required to exploit CVE-2021-27249.
Which software versions of D-Link DAP-2020 are affected by CVE-2021-27249?
D-Link DAP-2020 v1.01rc001 is affected by CVE-2021-27249.
How can I fix the vulnerability in D-Link DAP-2020?
To fix the vulnerability in D-Link DAP-2020, update the firmware to version 1.01rc001 or later as per the vendor's recommendation.

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