CVE-2026-5042 HIGH

CVE-2026-5042: Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow

Vendor Belkin
Product F9K1122
Weakness CWE-121
Published March 29, 2026
Last update March 30, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A security flaw has been discovered 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. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

March 29, 2026 CVE published
March 30, 2026 Record updated