CVE-2021-31755

Known Exploited 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 /goform/setmac allows attackers to execute arbitrary code on the system via a crafted post request.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 94.23% Top 5%
KEV Since 
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_3 exploit broken link third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2021-31755?
CVE-2021-31755 has been scored as a critical severity vulnerability.
How to fix CVE-2021-31755?
To fix CVE-2021-31755, 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-2021-31755 being actively exploited in the wild?
It is confirmed that CVE-2021-31755 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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