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CVE-2023-4346

CWE-645

High

76.2

RPS

Description

KNX devices that use KNX Connection Authorization and support Option 1 are, depending on the implementation, vulnerable to being locked and users being unable to reset them to gain access to the device. The BCU key feature on the devices can be used to create a password for the device, but this password can often not be reset without entering the current password. If the device is configured to interface with a network, an attacker with access to that network could interface with the KNX installation, purge all devices without additional security options enabled, and set a BCU key, locking the device. Even if a device is not connected to a network, an attacker with physical access to the device could also exploit this vulnerability in the same way.

Source: NVD

Signals

CVSS
7.5
High · v3.1
EPSS
1.29%
Probability of exploitation in the next 30 days (FIRST)
CISA KEV
In CISA KEV since Jul 2026
Fix commit
No known fix commit
Sources: MoreFixes, FreshFixes
Weakness
CWE-645
Published
29 Aug 2023
Last modified 16 Jul 2026

How to read these signals: RPS · EPSS · CISA KEV · Data sources

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Data as of 7 Oct 2026, 05:16 UK time

CVE-2023-4346 · RPS 76.2 · DevSecure Intelligence