CVE-2026-4226

HIGH

LB-LINK BL-WR9000 get_virtual_cfg sub_44E8D0 stack-based overflow

Title source: cna

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.

References (4)

Core 4

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-351149 | LB-LINK BL-WR9000 get_virtual_cfg sub_44E8D0 stack-based overflow

https://vuldb.com/?id.351149

Signature, Permissions Required signature permissions-required

VDB-351149 | CTI Indicators (IOB, IOC, IOA)

https://vuldb.com/?ctiid.351149

Third Party Advisory third-party-advisory

Submit #771207 | LB-LINK BL-WR9000 V2.4.9 over

https://vuldb.com/?submit.771207

Exploit exploit

https://github.com/glkfc/IoT-Vulnerability/blob/main/LB-LINK/LB-LINK_VirtualRules%20stack%20overflow_EN.md

View Exploit ZIP pw:eip

Scores

CVSS v3 8.8

EPSS 0.0069

EPSS Percentile 48.0%

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-787 CWE-121 CWE-119

Status published

Products (2)

LB-LINK/BL-WR9000 2.4.9

lb-link/bl-wr9000_firmware 2.4.9

Published Mar 16, 2026

Tracked Since Mar 16, 2026