CVE-2021-31756

Public Exploit

Description

An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copied to the stack variable.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.51% Top 20%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/Yu3H0/IoT_CVE/tree/main/Tenda/CVE_1 third party advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2021-31756?
CVE-2021-31756 has been scored as a critical severity vulnerability.
How to fix CVE-2021-31756?
To fix CVE-2021-31756, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31756 being actively exploited in the wild?
It is possible that CVE-2021-31756 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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