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CVE-2023-43467.5/HIGHEPSS 94.0%CISA KEV
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