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Vulnerability record · CVE-2021-4144 · published 23 December 2021

CVE-2021-4144: Tp-link tl-wr802n firmware os command injection vulnerability

Tp Link · Tl Wr802n Firmware

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

8.8 CVSS 3.1 High EPSS 1.9% · top 20.6% CWE-78 · OS command injection
8.8CVSS 3.1 base score, v2 6.5
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jvn.jp/en/vu/JVNVU94883311/ Third Party AdvisoryVDB Entry
https://www.tp-link.com/jp/support/download/tl-wr802n/#Firmware ProductVendor Advisory
https://jvn.jp/en/vu/JVNVU94883311/ Third Party AdvisoryVDB Entry
https://www.tp-link.com/jp/support/download/tl-wr802n/#Firmware ProductVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-4144), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.