CVE-2026-5042: Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-5042?
CVE-2026-5042 is classified as a high severity vulnerability due to its potential for stack-based overflow exploitation.
How do I fix CVE-2026-5042?
To fix CVE-2026-5042, update the Belkin F9K1122 router to the latest firmware version available from the manufacturer.
What is affected by CVE-2026-5042?
CVE-2026-5042 specifically affects Belkin F9K1122 routers running firmware version 1.00.33.
What type of attack is associated with CVE-2026-5042?
CVE-2026-5042 is associated with stack-based buffer overflow attacks that can lead to unauthorized code execution.
What is the context of CVE-2026-5042?
CVE-2026-5042 involves a security flaw in the function formCrossBandSwitch within the Parameter Handler component of the affected router.