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CVE-2026-11409

OS Command Injection in IPv6 PPPoE Configuration in TP-Link TL-WR940N

Published: Jun 16, 2026Updated: Jun 18, 2026 Sources: CVE List NVDCWE-78
NVD MITRE
7.2CVSSHIGH
EPSS Score
2.8%
Top 15.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-78

Affected Products

TL-WR940N v6TP-Link Systems Inc.Networking Infrastructure
tl-wr940n firmwaretp-linkNetworking Infrastructure
tp-link systems inc.commercialCNNetworking Infrastructureaka tp-link
tp-linkcommercialTWNetworking Infrastructureaka tp-link, tp link

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

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

Timeline

Published
Jun 16, 2026
Last Updated
Jun 18, 2026

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