Read the docs
TI-2026-03674 Aliases CVE-2026-4227GHSA-hj3v-rf5w-w57g

LB-LINK BL-WR9000 get_hidessid_cfg sub_44D844 buffer overflow

Priority HIGH 73CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00691 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LB-LINKBL-WR90002.4.9—No fix listedCNA
  • BL-WR9000 VendorLB-LINK Affected 2.4.9 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:lb-link:bl-wr9000_firmware:2.4.9:*:*:*:*:*:*:*2.4.9VulnerableLB-LINK
cpe:2.3:h:lb-link:bl-wr9000:-:*:*:*:*:*:*:*not specified by NVDRunning onLB-LINK
  • cpe:2.3:o:lb-link:bl-wr9000_firmware:2.4.9:*:*:*:*:*:*:* Versions 2.4.9 Vulnerable ·LB-LINK
  • cpe:2.3:h:lb-link:bl-wr9000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·LB-LINK

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4227
  2. 2026-10-03 Alias added: GHSA-hj3v-rf5w-w57g

References

Exploit 1

  • TI-2023-11781 LB-LINK BL-AC1900_2.0 v1.0.1, LB-LINK BL-WR9000 v2.4.9, LB-LINK BL-X26 v1.2.5, and… CVSS 3.1CRITICAL 9.8
  • TI-2026-03673 LB-LINK BL-WR9000 get_virtual_cfg sub_44E8D0 stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2026-03675 LB-LINK BL-WR9000 set_wifi sub_458754 command injection CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences