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2023-08-29
KNX Devices BCU Key Lockout Vulnerability (CVE-2023-4346) Analysis and Mitigation Guide
[Affected Scope] KNX-based smart home and building automation devices supporting KNX Connection Authorization and Option 1
[Impact] Attackers can set an unauthorized BCU key via network or physical access, permanently locking and bricking the device (Denial of Service)
[Mitigation] Restrict network exposure of KNX IP interfaces, enable KNX Secure features, and enforce strict physical access controls