CVE-2023-4346

KNX Association KNX Protocol Connection Authorization Option 1 Overly Restrictive Account Lockout Mechanism Vulnerability

Non évaluée Exploitée activement (CISA KEV)

Exploitation active confirmée

Ajoutée au catalogue CISA KEV le 15/07/2026, correctif exigé avant le 29/07/2026 pour les agences fédérales américaines.

Action requise : Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Description officielle (NVD)

KNX Association KNX Protocol Connection Authorization Option 1 contains an overly restrictive account lockout mechanism vulnerability that could allow an attacker to purge all devices without additional security options enabled and set a BCU key to lock the device.

En bref

ÉditeurKNX Association
ProduitKNX Protocol Connection Authorization Option 1
Publiée le15/07/2026
EPSS1,29 % (centile 70)
CWECWE-645

EPSS : probabilité estimée d'exploitation dans les 30 prochains jours.

Sources officielles

NVD (NIST) CVE.org CISA KEV

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