What is the severity of CVE-2021-39509?

The severity of CVE-2021-39509 is critical with a score of 9.8.

How does CVE-2021-39509 affect D-Link DIR-816 Firmware?

CVE-2021-39509 affects D-Link DIR-816 Firmware version 1.10cnb05_r1b011d88210.

What is the impact of CVE-2021-39509?

CVE-2021-39509 allows for command injection through shell metacharacters, which can lead to unauthorized execution of commands.

Are there any known fixes or patches for CVE-2021-39509?

At the moment, there are no known fixes or patches available for CVE-2021-39509. It is recommended to follow the vendor's security bulletin for updates.

Where can I find more information about CVE-2021-39509?

You can find more information about CVE-2021-39509 at the following sources: [GitHub - doudoudedi/main-DIR-816_A2_Command-injection](https://github.com/doudoudedi/main-DIR-816_A2_Command-injection), [GitHub - doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md](https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md), [D-Link Security Bulletin](https://www.dlink.com/en/security-bulletin/).

Vulnerability/
CVE-2021-39509

critical

9.8

CWE

24/8/2021

4/8/2024

CVE-2021-39509: Command Injection

First published: Tue Aug 24 2021(Updated: )

An issue was discovered in D-Link DIR-816 DIR-816A2_FWv1.10CNB05_R1B011D88210 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	=1.10cnb05_r1b011d88210
Dlink DIR-816	=a2

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-39509?
The severity of CVE-2021-39509 is critical with a score of 9.8.
How does CVE-2021-39509 affect D-Link DIR-816 Firmware?
CVE-2021-39509 affects D-Link DIR-816 Firmware version 1.10cnb05_r1b011d88210.
What is the impact of CVE-2021-39509?
CVE-2021-39509 allows for command injection through shell metacharacters, which can lead to unauthorized execution of commands.
Are there any known fixes or patches for CVE-2021-39509?
At the moment, there are no known fixes or patches available for CVE-2021-39509. It is recommended to follow the vendor's security bulletin for updates.
Where can I find more information about CVE-2021-39509?
You can find more information about CVE-2021-39509 at the following sources: [GitHub - doudoudedi/main-DIR-816_A2_Command-injection](https://github.com/doudoudedi/main-DIR-816_A2_Command-injection), [GitHub - doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md](https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md), [D-Link Security Bulletin](https://www.dlink.com/en/security-bulletin/).

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agent/last-modified-date
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agent/severity
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agent/weakness
agent/author
agent/softwarecombine
agent/tags
agent/event
agent/description
collector/mitre-cve
source/MITRE
vendor/dlink
canonical/dlink dir-816 firmware
version/dlink dir-816 firmware/1.10cnb05_r1b011d88210
canonical/dlink dir-816
version/dlink dir-816/a2

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