CVE-2026-4227 HIGH

CVE-2026-4227: LB-LINK BL-WR9000 get_hidessid_cfg sub_44D844 buffer overflow

Vendor Lb-Link
Product BL-WR9000
Weakness CWE-120
Published March 16, 2026
Last update March 16, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

A security vulnerability has been detected in LB-LINK BL-WR9000 2.4.9. The impacted element is the function sub_44D844 of the file /goform/get_hidessid_cfg. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

March 16, 2026 CVE published
March 16, 2026 Record updated