What’s Vulnerable › Vulnerabilities

CVE-2021-4144

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-23 · updated 2026-06-17
• Weakness: CWE-78

Description

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

Affected products

• TP-LINK TL-WR802N V4(JP): before 211202 — fixed in 211202

How to fix

Upgrade to a fixed version: TP-LINK TL-WR802N V4(JP) 211202. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/vu/JVNVU94883311/
• https://www.tp-link.com/jp/support/download/tl-wr802n/#Firmware
• https://jvn.jp/en/vu/JVNVU94883311/
• https://www.tp-link.com/jp/support/download/tl-wr802n/#Firmware

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