CVE-2011-3486

This exploit triggers a Denial of Service (DoS) in Beckhoff TwinCAT by sending a malformed UDP packet to port 48899, causing an invalid read access. The provided command uses a custom tool (udpsz) to send the crafted payload.

This Metasploit module exploits a DoS vulnerability in Beckhoff TwinCAT SCADA PLC by sending a crafted UDP packet to port 48899, causing an access violation in TCATSysSrv.exe. The payload consists of a specific byte sequence followed by a large buffer of null and 0xFF bytes.