What is the severity of CVE-2021-31755?

CVE-2021-31755 has a CVSS base score indicating a high severity level due to its potential for remote code execution.

How do I fix CVE-2021-31755?

To mitigate CVE-2021-31755, upgrade the firmware of your Tenda AC11 device to a version newer than 02.03.01.104_CN.

What type of vulnerability is CVE-2021-31755?

CVE-2021-31755 is a stack buffer overflow vulnerability that can allow arbitrary code execution.

Which devices are affected by CVE-2021-31755?

CVE-2021-31755 affects Tenda AC11 devices running firmware versions up to and including 02.03.01.104_CN.

What can an attacker do exploiting CVE-2021-31755?

An attacker can exploit CVE-2021-31755 to execute arbitrary code on the affected Tenda AC11 devices.

Vulnerability/
CVE-2021-31755

Exploited

critical

CWE

119 787

7/5/2021

4/2/2025

CVE-2021-31755: Tenda AC11 Router Stack Buffer Overflow Vulnerability

First published: Fri May 07 2021(Updated: )

An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setmac allows attackers to execute arbitrary code on the system via a crafted post request.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
All of
Tenda AC11 Firmware	<=02.03.01.104_cn
Tenda AC11 Router
Tenda AC11 Firmware	<=02.03.01.104_cn
Tenda AC11 Router
Tenda AC11

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-31755?
CVE-2021-31755 has a CVSS base score indicating a high severity level due to its potential for remote code execution.
How do I fix CVE-2021-31755?
To mitigate CVE-2021-31755, upgrade the firmware of your Tenda AC11 device to a version newer than 02.03.01.104_CN.
What type of vulnerability is CVE-2021-31755?
CVE-2021-31755 is a stack buffer overflow vulnerability that can allow arbitrary code execution.
Which devices are affected by CVE-2021-31755?
CVE-2021-31755 affects Tenda AC11 devices running firmware versions up to and including 02.03.01.104_CN.
What can an attacker do exploiting CVE-2021-31755?
An attacker can exploit CVE-2021-31755 to execute arbitrary code on the affected Tenda AC11 devices.

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