CVE-2025-7089: Belkin f9k1122 Firmware

High severity, CVSS 8.8. EPSS: 6.8% chance of exploitation in the next 30 days.

A vulnerability was found in Belkin F9K1122 1.00.33 and classified as critical. This issue affects the function formWanTcpipSetup of the file /goform/formWanTcpipSetup of the component webs. The manipulation of the argument pppUserName leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Belkin f9k1122 Firmware: version 1.00.33 only

Published 2025-07-06. Last modified 2026-06-17.