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CVE-2026-3227

6.8 · MEDIUM

A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command.

Published Mar 16, 2026CWE-78EPSS 1.88%

Overview

CVE-2026-3227 is a medium-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command. In the router configuration import function allows an authenticated attacker to upload a crafted configuration file that results in execution of OS commands with root privileges during port-trigger processing.

Successful exploitation allows an authenticated attacker to execute system commands with root privileges, leading to full device compromise.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.tp-link.com/en/support/download/tl-wr802n/v4/#FirmwareRefwww.tp-link.com/en/support/download/tl-wr840n/v6/#FirmwareRefwww.tp-link.com/en/support/download/tl-wr841n/v14/#FirmwareRefwww.tp-link.com/us/support/download/tl-wr802n/v4/#FirmwareRefwww.tp-link.com/us/support/download/tl-wr841n/v14/#FirmwareRefwww.tp-link.com/us/support/faq/5018/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-3227?

CVE-2026-3227 is a medium-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2026-3227?

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-3227?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-3227?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-3227 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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