CVE-2023-4346CISA KEVEPSS p69.3%

CVE-2023-4346KNX Association KNX Protocol Connection Authorization Option 1 Overly Restrictive Account Lockout Mechanism Vulnerability

KNX Association / KNX Protocol Connection Authorization Option 1

Description

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.

Scoring

CVSS 7.5 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS1.29% probability of exploitation · percentile 69.3% · 2026-10-05T12:00:23Z
Last modified2026-07-16

CISA KEV entry

Added to KEV: 2026-07-15

Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.