What is CVE-2021-31755?

CVE-2021-31755 is a vulnerability in N/a. Published 2021-05-07.

Is CVE-2021-31755 known to be exploited?

Yes. CVE-2021-31755 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 9 public proof-of-concept repositories are indexed.

Vulnerability in N/a

CVE-2021-31755

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.

EPSS: 0.940 (99.9th percentile) — read the EPSS interpretation.

Affected products

N/a — versions n/a

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2021-11-17.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

github.com/Yu3H0/IoT_CVE/tree/main/Tenda/CVE_3 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-31755?: CVE-2021-31755 is a vulnerability in N/a. Published 2021-05-07.
Is CVE-2021-31755 known to be exploited?: Yes. CVE-2021-31755 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 9 public proof-of-concept repositories are indexed.