CVE-2026-11409 - Vulnerability Details - OpenCVE

An authenticated OS command injection vulnerability exists in the IPv6 PPPoE configuration handler in TL-WR940N v6 due to improper sanitization of user input. An attacker with administrative access may exploit this issue to execute arbitrary system commands with elevated privileges.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

No data.

References

Link	Providers
https://www.tp-link.com/en/support/download/tl-wr940n/v6/#Firmware
https://www.tp-link.com/us/support/download/tl-wr940n/v6/#Firmware
https://www.tp-link.com/us/support/faq/5131/

History

Thu, 18 Jun 2026 04:45:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 16 Jun 2026 22:00:00 +0000

Type	Values Removed	Values Added
Description		An authenticated OS command injection vulnerability exists in the IPv6 PPPoE configuration handler in TL-WR940N v6 due to improper sanitization of user input. An attacker with administrative access may exploit this issue to execute arbitrary system commands with elevated privileges.
Title		OS Command Injection in IPv6 PPPoE Configuration in TP-Link TL-WR940N
Weaknesses		CWE-78
References		https://www.tp-link.com/en/support/download/tl-wr940n/v6/#Firmware https://www.tp-link.com/us/support/download/tl-wr940n/v6/#Firmware https://www.tp-link.com/us/support/faq/5131/
Metrics		cvssV4_0 `{'score': 8.5, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: TPLink

Published: 2026-06-16T21:03:47.128Z

Updated: 2026-06-18T03:56:11.660Z

Reserved: 2026-06-05T18:37:11.242Z

Link: CVE-2026-11409

Vulnrichment

Updated: 2026-06-17T14:35:26.733Z

NVD

No data.

Redhat

No data.

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