8.5
HIGH CVSS 4.0
CVE-2026-11409
OS Command Injection in IPv6 PPPoE Configuration in TP-Link TL-WR940N
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.

INFO

Published Date :

June 16, 2026, 9:03 p.m.

Last Modified :

June 16, 2026, 9:03 p.m.

Remotely Exploit :

No

Source :

TPLink
Affected Products

The following products are affected by CVE-2026-11409 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Tp-link tl-wr940n
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 4.0 HIGH f23511db-6c3e-4e32-a477-6aa17d310630
Solution
Update firmware to patch OS command injection vulnerability in IPv6 PPPoE configuration.
  • Update router firmware to the latest version.
  • Sanitize all user inputs in the configuration handler.
  • Restrict administrative access to trusted users only.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-11409 vulnerability anywhere in the article.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.