Port 5357 Hacktricks May 2026

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.

Historically, WSDAPI has been subject to critical vulnerabilities:

Regularly update Windows systems to mitigate legacy vulnerabilities like MS09-063. port 5357 hacktricks

While primarily an SMBv3 vulnerability, some research has linked WSD-exposed interfaces to broader exploit chains in similar network discovery contexts. Detection and Mitigation

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). A stack-based buffer overflow vulnerability

If the machine is on a public network, disable "Network Discovery" in the Advanced sharing settings of the Control Panel.

Exposed printer admin pages may allow attackers to intercept print jobs or move through the network. Notable Vulnerabilities While primarily an SMBv3 vulnerability, some research has

From a security perspective, port 5357 is often scrutinized for potential information leakage. Even without active exploitation, an open port 5357 can disclose:

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?