CVE-2023-4346· knx association / knx protocol connection authorization option 1· CWE-645
KNX Association KNX Protocol Connection Authorization Option 1 Overly Restrictive Account Lockout Mechanism Vulnerability
Exploited in the wild. Listed by CISA on 2026-07-15; known to be used by ransomware.
1.4%likelihood of exploitation, next 30 days
72%of all CVEs are less likely
Nonecheck to confirm it
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.
No ready check is stored for this CVE. Confirm it by hand from the references.
References
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