CVE-2021-4144

Name: CVE-2021-4144
Creator: NVD / NIST
Published: 2021-12-23T07:15:06.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.95%

Last modified Jun 17, 2026

CVE-2021-4144 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.. EPSS estimates a 1.95% chance of exploitation in the next 30 days.

Description

TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.95%

77.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tp-Link	Tl-Wr802n Firmware	< 211202

References

https://jvn.jp/en/vu/JVNVU94883311/Third Party Advisory, VDB Entry
https://www.tp-link.com/jp/support/download/tl-wr802n/#FirmwareProduct, Vendor Advisory
https://jvn.jp/en/vu/JVNVU94883311/Third Party Advisory, VDB Entry
https://www.tp-link.com/jp/support/download/tl-wr802n/#FirmwareProduct, Vendor Advisory

Timeline

Published: Dec 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4144?

TP-Link wifi router TL-WR802N V4(JP), with firmware version prior to 211202, is vulnerable to OS command injection.

How severe is CVE-2021-4144?

CVE-2021-4144 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.95% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4144?

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-2021-4144?

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

Scan your code now

Source: NVD / NIST