CVE-2021-44631

Name: CVE-2021-44631
Creator: NVD / NIST
Published: 2022-03-10T17:44:21.703+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.41%

Last modified Jun 17, 2026

CVE-2021-44631 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 in the /cloud_config/router_post/reset_cloud_pwd feature, which allows malicous users to execute arbitrary code on the system via a crafted post request.. EPSS estimates a 2.41% chance of exploitation in the next 30 days.

Description

A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 in the /cloud_config/router_post/reset_cloud_pwd feature, which allows malicous users to execute arbitrary code on the system via a crafted post request.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.41%

82.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Tp-Link	Tl-Wr886n Firmware	20190826_2.3.8

References

https://github.com/Yu3H0/IoT_CVE/tree/main/886N/resetCloudPwdRegisterExploit, Third Party Advisory
https://github.com/Yu3H0/IoT_CVE/tree/main/886N/resetCloudPwdRegisterExploit, Third Party Advisory

Timeline

Published: Mar 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44631?

How severe is CVE-2021-44631?

CVE-2021-44631 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.41% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44631?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-44631?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST