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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Belkin F9K1122 affected
Version Status Constraints
1.00.33 affected —

No data.

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Project Subscriptions

Vendors Products
Belkin Subscribe
F9k1122 Firmware Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_153/README.md cve-icon cve-icon
https://vuldb.com/submit/779123 cve-icon cve-icon
https://vuldb.com/vuln/353965 cve-icon cve-icon
https://vuldb.com/vuln/353965/cti cve-icon cve-icon
History

Sun, 29 Mar 2026 10:45:00 +0000

Type Values Removed Values Added
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.
Title Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow
First Time appeared Belkin
Belkin f9k1122 Firmware
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:o:belkin:f9k1122_firmware:*:*:*:*:*:*:*:*
Vendors & Products Belkin
Belkin f9k1122 Firmware
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-29T10:30:10.400Z

Reserved: 2026-03-27T16:35:43.170Z

Link: CVE-2026-5042

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-29T11:16:34.867

Modified: 2026-03-29T11:16:34.867

Link: CVE-2026-5042

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses