CVE-2026-4566

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.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md	Exploit Third Party Advisory
https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md#proof-of-concept-poc	Exploit Third Party Advisory
https://vuldb.com/?ctiid.352403	Permissions Required VDB Entry
https://vuldb.com/?id.352403	Third Party Advisory VDB Entry
https://vuldb.com/?submit.775132	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:belkin:f9k1122_firmware:1.00.33:*:*:*:*:*:*:*

cpe:2.3:h:belkin:f9k1122:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-23 03:16

Updated : 2026-06-17 10:56

NVD link : CVE-2026-4566

Mitre link : CVE-2026-4566

CVE.ORG link : CVE-2026-4566

JSON object : View

Products Affected

belkin

f9k1122
f9k1122_firmware

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow

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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."}, {"lang": "es", "value": "Se ha encontrado un fallo en Belkin F9K1122 1.00.33. El elemento afectado es la funci\u00f3n formWISP5G del archivo /goform/formWISP5G. Ejecutar una manipulaci\u00f3n del argumento webpage puede llevar a un desbordamiento de b\u00fafer basado en pila. El ataque puede ser lanzado remotamente. El exploit ha sido publicado y puede ser utilizado. El proveedor fue contactado con antelaci\u00f3n sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."}], "lastModified": "2026-06-17T10:56:49.660", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:belkin:f9k1122_firmware:1.00.33:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE458590-4E31-4DE9-A746-F8329BEA5230"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:belkin:f9k1122:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5172CB1F-4409-4E22-9A66-91CF4F11FCD1"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cna@vuldb.com"}