CVE-2026-5042

HIGH

Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow

Title source: cna

Description

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.

References (4)

Core 4

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-353965 | Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow

https://vuldb.com/vuln/353965

Signature, Permissions Required signature permissions-required

VDB-353965 | CTI Indicators (IOB, IOC, IOA)

https://vuldb.com/vuln/353965/cti

Third Party Advisory third-party-advisory

Submit #779123 | Belkin F9K1122 1.00.33 Stack-based Buffer Overflow

https://vuldb.com/submit/779123

Exploit exploit

https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_153/README.md

View Exploit ZIP pw:eip

Scores

CVSS v3 8.8

EPSS 0.0067

EPSS Percentile 47.1%

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 CWE-787

Status published

Products (2)

Belkin/F9K1122 1.00.33

belkin/f9k1122_firmware 1.00.33

Published Mar 29, 2026

Tracked Since Mar 29, 2026