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CVE-2026-4226 Details

Description

A weakness has been identified in LB-LINK BL-WR9000 2.4.9. The affected element is the function sub_44E8D0 of the file /goform/get_virtual_cfg. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/glkfc/IoT-Vulnerability/blob/main/LB-LINK/LB-LINK_VirtualRules%20stack%20overflow_EN.md	[email protected]	ExploitThird Party Advisory
https://vuldb.com/?ctiid.351149	[email protected]	Permissions RequiredVDB Entry
https://vuldb.com/?id.351149	[email protected]	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.771207	[email protected]	Third Party AdvisoryVDB Entry

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	[email protected]
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]
CWE-121	Stack-based Buffer Overflow	[email protected]

Affected Products

Product	Versions
lb-link bl-wr9000 firmware	2.4.9
CPE cpe:2.3:o:lb-link:bl-wr9000_firmware:2.4.9:::::::* Remediation No remediation found in references.
lb-link bl-wr9000	All versions
CPE cpe:2.3:h:lb-link:bl-wr9000:-:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Mar 20, 2026	Initial Analysis	[email protected]
Mar 16, 2026	New CVE Received	[email protected]