CVE-2026-5042 | Belkin F9K1122 1.00.33 Parameter formCrossBandSwitch webpage stack-based overflow

A vulnerability, which was classified as critical, was found in Belkin F9K1122 1.00.33. The affected element is the function formCrossBandSwitch of the file /goform/formCrossBandSwitch of the component Parameter Handler. The manipulation of the argument webpage results in stack-based buffer overflow.

This vulnerability is cataloged as CVE-2026-5042. The attack may be launched remotely. Furthermore, there is an exploit available.

The vendor was contacted early about this disclosure but did not respond in any way.