CVE-2026-4566

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

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

V2 Legend

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

29 Apr 2026, 22:10

Type Values Removed Values Added
References () https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md - () https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md - Exploit, Third Party Advisory
References () https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md#proof-of-concept-poc - () https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md#proof-of-concept-poc - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.352403 - () https://vuldb.com/?ctiid.352403 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.352403 - () https://vuldb.com/?id.352403 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.775132 - () https://vuldb.com/?submit.775132 - Third Party Advisory, VDB Entry
Summary
  • (es) Se ha encontrado un fallo en Belkin F9K1122 1.00.33. El elemento afectado es la función formWISP5G del archivo /goform/formWISP5G. Ejecutar una manipulación del argumento webpage puede llevar a un desbordamiento de búfer basado en pila. El ataque puede ser lanzado remotamente. El exploit ha sido publicado y puede ser utilizado. El proveedor fue contactado con antelación sobre esta divulgación, pero no respondió de ninguna manera.
CPE cpe:2.3:o:belkin:f9k1122_firmware:1.00.33:*:*:*:*:*:*:*
cpe:2.3:h:belkin:f9k1122:-:*:*:*:*:*:*:*
First Time Belkin f9k1122
Belkin
Belkin f9k1122 Firmware

23 Mar 2026, 03:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-23 03:16

Updated : 2026-04-29 22:10

NVD link : CVE-2026-4566

Mitre link : CVE-2026-4566

CVE.ORG link : CVE-2026-4566

JSON object : View

Products Affected

belkin

  • f9k1122_firmware
  • f9k1122
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow