CVE-2026-27511: Tenda f3 Firmware

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Tenda f3 Firmware: up to and including 12.01.01.55_multi

Published 2026-02-23. Last modified 2026-06-17.