This indicates an attack attempt to exploit a Denial of Service vulnerability in Seimens SIPROTEC.
The vulnerability is due to insufficient sanitization of user-supplied data when Seimens SIPROTEC handles a malicious packet on UDP port 50000. An attacker could exploit this vulnerability to cause a denial of service condition on an affected system.
SIPROTEC 4 and SIPROTEC Compact product families: All devices where the Ethernet module EN100 with version V4.24 or lower is included.
Denial of Service: Remote attackers can crash vulnerable systems.