CVE-2026-4226

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.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

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

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/glkfc/IoT-Vulnerability/blob/main/LB-LINK/LB-LINK_VirtualRules%20stack%20overflow_EN.md	Exploit Third Party Advisory
https://vuldb.com/?ctiid.351149	Permissions Required VDB Entry
https://vuldb.com/?id.351149	Third Party Advisory VDB Entry
https://vuldb.com/?submit.771207	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:lb-link:bl-wr9000_firmware:2.4.9:*:*:*:*:*:*:*

cpe:2.3:h:lb-link:bl-wr9000:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-16 14:20

Updated : 2026-03-20 18:21

NVD link : CVE-2026-4226

Mitre link : CVE-2026-4226

CVE.ORG link : CVE-2026-4226

JSON object : View

Products Affected

lb-link

bl-wr9000_firmware
bl-wr9000

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow

CWE-787

Out-of-bounds Write

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El proveedor fue contactado tempranamente sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."}], "lastModified": "2026-03-20T18:21:05.403", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:lb-link:bl-wr9000_firmware:2.4.9:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A23AFF5-C85A-4422-933E-02547D9E2859"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:lb-link:bl-wr9000:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "29EAB380-0F6C-4E9A-B7DA-5C36021E4175"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cna@vuldb.com"}