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7.4
Belkin F9K1122 Firmware: Stack Overflow in Webpage Form
CVE-2026-5608
Summary
A critical flaw in the Belkin F9K1122 firmware allows an attacker to potentially execute malicious code by manipulating a webpage form. This could allow an attacker to take control of the device from a remote location. We recommend checking with Belkin for a firmware update to address this issue.
Original title
A vulnerability was detected in Belkin F9K1122 1.00.33. Affected is the function formWlanSetup of the file /goform/formWlanSetup. The manipulation of the argument webpage results in stack-based buf...
Original description
A vulnerability was detected in Belkin F9K1122 1.00.33. Affected is the function formWlanSetup of the file /goform/formWlanSetup. The manipulation of the argument webpage results in stack-based buffer overflow. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
nvd CVSS2.0
9.0
nvd CVSS3.1
8.8
nvd CVSS4.0
7.4
Vulnerability type
CWE-119
Buffer Overflow
CWE-121
Stack-based Buffer Overflow
Published: 6 Apr 2026 · Updated: 6 Apr 2026 · First seen: 6 Apr 2026