Which versions of LB-LINK BL-WR9000 are affected by CVE-2026-4228?

Organizations using A vulnerability should be aware of moderate risk from CVE-2026-4228, a command injection vulnerability rated CVSS 6.3.

Is there a public PoC exploit available for CVE-2026-4228?

Yes, a public proof-of-concept exploit is available for CVE-2026-4228. Prioritise patching immediately. EPSS: 0.8%.

LB-LINK BL-WR9000 CVE-2026-4228

Q: What is the CVSS score of CVE-2026-4228?

CVE-2026-4228 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.8%.

EUVD-2026-12371 LOW

Command Injection (CWE-77)

2026-03-16 VulDB

Command Injection

2.1

CVSS 4.0

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.3 (MEDIUM) 2.1 (LOW)

PoC Detected

Mar 20, 2026 - 18:19 vuln.today

Public exploit code

EUVD ID Assigned

Mar 16, 2026 - 09:00 euvd

EUVD-2026-12371

Analysis Generated

Mar 16, 2026 - 09:00 vuln.today

CVE Published

Mar 16, 2026 - 08:02 nvd

MEDIUM 6.3

DescriptionNVD

A vulnerability was detected in LB-LINK BL-WR9000 2.4.9. This affects the function sub_458754 of the file /goform/set_wifi. The manipulation results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Command injection in LB-LINK BL-WR9000 2.4.9 via the /goform/set_wifi endpoint allows authenticated remote attackers to execute arbitrary commands with network access. Public exploit code is available for this vulnerability, and no patch has been released by the vendor despite early disclosure notification.

RemediationAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-4228 vulnerability details – vuln.today

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