CVE-2026-4566

HIGH

Belkin F9K1122 formWISP5G stack-based overflow

Title source: cna
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-352403 | Belkin F9K1122 formWISP5G stack-based overflow
https://vuldb.com/?id.352403
Signature, Permissions Required signature permissions-required
VDB-352403 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/?ctiid.352403
Third Party Advisory third-party-advisory
Submit #775132 | Belkin F9K1122 1.00.33 Stack-based Buffer Overflow
https://vuldb.com/?submit.775132

Scores

CVSS v3 8.8
EPSS 0.0011
EPSS Percentile 28.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-119 CWE-121
Status published
Products (2)
Belkin/F9K1122 1.00.33
belkin/f9k1122_firmware 1.00.33
Published Mar 23, 2026
Tracked Since Mar 23, 2026