What is CVE-2026-11409?

CVE-2026-11409 is a high-severity vulnerability in Tp-link Tl-wr940n, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-06-17.

How severe is CVE-2026-11409?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Tp-link Tl-wr940n

CVE-2026-11409

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 arbitra…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.028 (84.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tp-link Tl-wr940n — versions v6
Tp-link Tl-wr940n_firmware
Tp-link Systems Inc. Tl-wr940n V6 — versions 0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

f23511db-6c3e-4e32-a477-6aa17d310630 (Product, patch)
f23511db-6c3e-4e32-a477-6aa17d310630 (Product, patch)
f23511db-6c3e-4e32-a477-6aa17d310630 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-11409?: CVE-2026-11409 is a high-severity vulnerability in Tp-link Tl-wr940n, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-06-17.
How severe is CVE-2026-11409?: High severity. CVSS v3 base score is 7.2 out of 10.