CVE-2026-4566: Belkin F9K1122 formWISP5G stack-based overflow
A flaw has been found in Belkin F9K1122 1.00.33. The affected element is the function formWISP5G of the file /goform/formWISP5G. Executing a manipulation of the argument webpage can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-4566?
CVE-2026-4566 has been classified as a high severity vulnerability due to its potential for remote exploitation through a stack-based buffer overflow.
How do I fix CVE-2026-4566?
To remediate CVE-2026-4566, updating the firmware of the Belkin F9K1122 to the latest version is recommended.
What products are affected by CVE-2026-4566?
CVE-2026-4566 specifically affects the Belkin F9K1122 with firmware version 1.00.33.
Can CVE-2026-4566 be exploited remotely?
Yes, CVE-2026-4566 can be exploited remotely if an attacker manipulates the argument in the formWISP5G function.
What type of vulnerability is CVE-2026-4566?
CVE-2026-4566 is a stack-based buffer overflow vulnerability found in the Belkin F9K1122 router.