Bonjour 3.1.0.1 !full! Jun 2026

Specific to the Windows build (3.1.0.1), legacy installers have historically been susceptible to DLL search order hijacking if the application path permissions are not strictly locked down.

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Unpatched or legacy versions of mDNS responders can be utilized in Distributed Denial of Service (DDoS) amplification attacks. If the firewall configuration is lax, Bonjour 3.1 may respond to queries originating from outside the LAN, inadvertently participating in a reflection attack. bonjour 3.1.0.1

Unlike standard DNS, which relies on a central server, Bonjour operates on a peer-to-peer model suitable for small networks (LANs). Version 3.1 optimized the Windows service architecture to more closely mirror the native functionality found in macOS. Specific to the Windows build (3