CVE-2026-27511 Tenda F3 Clickjacking in Web Management Interface

Medium 5.1 Published 23 Feb 2026 Updated 11 May 2026

Attackers can trick administrators into performing unauthorized configuration changes via clickjacking in the Tenda F3 router's web interface.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-27511?

CVE-2026-27511 is a medium-severity vulnerability in Shenzhen Tenda Technology Co., Ltd. Tenda F3, published on 23 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a clickjacking vulnerability in the web-based administrative interface. The interface does not set the X-Frame-Options header, allowing attacker-controlled sites to embed administrative pages in an iframe and trick an authenticated administrator into unintended interactions that may result in unauthorized configuration changes.

Weakness: CWE-1021

Which versions are affected by CVE-2026-27511?

It affects 1 product.

Products include Tenda F3 Firmware.

How do I fix CVE-2026-27511?

No fix has been published for CVE-2026-27511 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-27511 being exploited?

There is no known exploitation of CVE-2026-27511 in the wild and no public exploit code.

Sources

Also known as GHSA-q6w4-grhv-wcp8.