What is CVE-2021-39510?

CVE-2021-39510 is a critical vulnerability discovered in the D-Link DIR816_A1_FW101CNB04 750m11ac wireless router that allows command injection through shell metacharacters in the user name.

How severe is CVE-2021-39510?

CVE-2021-39510 has a severity rating of 9.8, which is considered critical.

What software is affected by CVE-2021-39510?

The D-Link DIR816_A1_FW101CNB04 750m11ac wireless router with firmware version 101cnb04 is affected by CVE-2021-39510.

How can CVE-2021-39510 be exploited?

CVE-2021-39510 can be exploited by constructing a user name string that contains shell metacharacters to perform command injection.

Are there any references for CVE-2021-39510?

Yes, you can find references for CVE-2021-39510 at the following links: [GitHub - doudoudedi/main-DIR-816_A1_Command-injection](https://github.com/doudoudedi/main-DIR-816_A1_Command-injection), [GitHub - doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.md](https://github.com/doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.md), [D-Link Security Bulletin](https://www.dlink.com/en/security-bulletin/)

Vulnerability/
CVE-2021-39510

critical

9.8

CWE

24/8/2021

4/8/2024

CVE-2021-39510: Command Injection

First published: Tue Aug 24 2021(Updated: )

An issue was discovered in D-Link DIR816_A1_FW101CNB04 750m11ac wireless router, The HTTP request parameter is used in the handler function of /goform/form2userconfig.cgi route, which can construct the user name string to delete the user function. This can lead to command injection through shell metacharacters.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Dlink Dir-816 Firmware	=101cnb04
Dlink DIR-816	=a1

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Frequently Asked Questions

What is CVE-2021-39510?
CVE-2021-39510 is a critical vulnerability discovered in the D-Link DIR816_A1_FW101CNB04 750m11ac wireless router that allows command injection through shell metacharacters in the user name.
How severe is CVE-2021-39510?
CVE-2021-39510 has a severity rating of 9.8, which is considered critical.
What software is affected by CVE-2021-39510?
The D-Link DIR816_A1_FW101CNB04 750m11ac wireless router with firmware version 101cnb04 is affected by CVE-2021-39510.
How can CVE-2021-39510 be exploited?
CVE-2021-39510 can be exploited by constructing a user name string that contains shell metacharacters to perform command injection.
Are there any references for CVE-2021-39510?
Yes, you can find references for CVE-2021-39510 at the following links: [GitHub - doudoudedi/main-DIR-816_A1_Command-injection](https://github.com/doudoudedi/main-DIR-816_A1_Command-injection), [GitHub - doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.md](https://github.com/doudoudedi/main-DIR-816_A1_Command-injection/blob/main/injection_A1.md), [D-Link Security Bulletin](https://www.dlink.com/en/security-bulletin/)

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vendor/dlink
canonical/dlink dir-816 firmware
version/dlink dir-816 firmware/101cnb04
canonical/dlink dir-816
version/dlink dir-816/a1

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