CVE detail
CVE-2023-4346
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 15.0 · KEV 25.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 2
- within the 30d window
- Peak daily
- 1
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- U.S. CISA adds KNX Association KNX Protocol Connection Authorization Option 1 and Oracle flaws to its Known Exploited Vulnerabilities catalogSecurity Affairs
osoft flaws to its Known Exploited Vulnerabilities (KEV) catalog. The flaws added to the catalog are: The vulnerability CVE-2023-4346 (CVSS […]
newssecurityaffairs.comJul 17, 2026, 8:13 AM wo new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2023-4346 KNX Association KNX Protocol Connection Authorization Option 1 Overly Restrictive Account Lockout Mechanism Vulnerability CVE-2026-46817 Oracle E-Business Suite Improper Privilege Management Vulnerability These types of
governmentwww.cisa.govJul 15, 2026, 12:00 PMNo excerpt available.
Mitigationwww.cisa.govAug 29, 2023, 8:15 PMNo excerpt available.
Mitigationwww.cisa.govAug 29, 2023, 8:15 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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