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**Name of the Vulnerable Software and Affected Versions** Siemens C450 IP and C475 IP VoIP devices (affected versions not specified) **Description** The issue allows remote attackers to cause a denial of service, resulting in disconnected calls and device reboot, by sending a crafted SIP packet to UDP port 5060, specifically the API endpoint "UDP port 5060". **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.