Port 5357 Hacktricks !!top!! May 2026

Port 5357: Deep Dive into WSDAPI and Network Discovery In modern Windows environments, port 5357 (TCP) is a frequently encountered service that often appears during internal network scans. While it is a standard component for device discovery, it can provide valuable information for penetration testers or present a security risk if mismanaged. What is Port 5357?

The discovery process usually begins with a multicast message over . Once a device is discovered and a handshake is completed, further communication and data exchange move to TCP port 5357 (HTTP) or TCP port 5358 (HTTPS). port 5357 hacktricks

In high-security environments, consider replacing WSD with more authenticated protocols like IPP (Internet Printing Protocol) or LPD . Port 5357: Deep Dive into WSDAPI and Network

Printer names, hostnames, and network paths. The discovery process usually begins with a multicast

A stack-based buffer overflow vulnerability. Attackers could send a crafted WS-Discovery message with an overly long "MIME-Version" string to execute arbitrary code with service-level privileges.

Port 5357 is primarily used by the , which is Microsoft's implementation of the WS-Discovery protocol. Its core function is to allow devices on a local network—such as printers, scanners, and file shares—to advertise their presence and discover one another without the need for manual configuration or a central server. Service Name: http Protocol: TCP (typically) Associated Port: 5358 (often used as the HTTPS counterpart)