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Siemens LOGO! 8 Vulnerabilities: Remote Exploitation Risk

⚠️ Siemens published an advisory for LOGO! 8 and SIPLUS LOGO! devices detailing three vulnerabilities (CVE-2025-40815, CVE-2025-40816, CVE-2025-40817) that could enable remote code execution, denial-of-service, or unauthenticated device manipulation. CVE-2025-40815 is a buffer overflow (CVSSv4 8.6) caused by improper TCP packet validation; the others are missing-authentication issues affecting IP and time configuration. Siemens is preparing fixes; interim mitigations include protecting LSC access with a strong password and restricting UDP port 10006 to trusted IPs while CISA recommends impact analyses before changes.