The device's PROFINET service is affected by a buffer overflow vulnerability that exists in the default configuration. An unauthenticated remote attacker could exploit this vulnerability to reboot the device or execute arbitrary code.

The device's PROFINET service is affected by a buffer overflow vulnerability that exists in the default configuration. An unauthenticated remote attacker could exploit this vulnerability to reboot the device or execute arbitrary code.

This advisory addresses multiple security vulnerabilities in PLCnext firmware versions prior to 2026.0.3. The vulnerabilities may allow unauthenticated attackers to cause denial of service, trigger unexpected system behavior, or execute unauthorized SQL queries. Successful exploitation could impact the availability, integrity, and confidentiality of affected PLCnext Control devices. All issues are resolved in PLCnext firmware version 2026.0.3.