Port 5357 Hacktricks Link -

: Historically, this service has been susceptible to memory corruption. For example, Microsoft Security Bulletin MS09-063

HTTP/1.1 404 Not Found Content-Type: text/html; charset=us-ascii Server: Microsoft-HTTPAPI/2.0 Date: Wed, 14 May 2026 12:00:00 GMT Connection: close Content-Length: 315 Use code with caution. Accessing the WSD Endpoint

According to HackTricks, a website known for providing detailed guides on penetration testing and cybersecurity:

is tied to the Web Services for Devices API (WSDAPI) , a Microsoft implementation of the WS-Discovery protocol. It allows Windows operating systems to automatically discover and communicate with local network hardware like printers, scanners, and file shares. During penetration testing, locating an open port 5357 via infrastructure logs or tools like the port 5357 hacktricks

: HTTP (often managed by the Windows HTTP Server API, http.sys )

You can use to identify the service and its version. Since it runs over HTTP, standard service discovery flags are effective: nmap -p 5357 -sV Use code with caution.

Port 5357 – WSDAPI (Web Services for Devices) - PentestPad : Historically, this service has been susceptible to

simply by sending a message with a "specially crafted" long header. Though patched years ago, this specific port remains a subtle marker of a machine's network discovery configuration, often accessible if the Windows Firewall is set to anything other than "Public". To secure the network, the analyst recommended: Filtering access

It works in conjunction with , where UDP acts as the discovery mechanism, and TCP 5357 serves the actual device metadata over HTTP. 2. Reconnaissance and Enumeration

In local network environments, services tied to network discovery can sometimes be coerced into authenticating against an attacker-controlled machine. While tools like Responder target LLMNR/NBT-NS (UDP 137/138) or mDNS, WSD configurations can occasionally be manipulated to force a machine to initiate an outbound SMB connection, exposing NTLM hashes for cracking or relaying. 4. Remediation and Hardening Port 5357 – WSDAPI (Web Services for Devices)

From a penetration testing perspective, port 5357 is often a "quiet" target used for gathering information or facilitating lateral movement rather than direct RCE (Remote Code Execution).

. It allows devices to advertise their presence and services on a local network without manual configuration. While useful for seamless hardware integration, it often presents a surface for information gathering during a security assessment. Security Implications and Pentesting According to methodologies found on resources like HackTricks