CVE-2025-11781: Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The affected firmware contains a hardcoded static authenticati

CVE-2025-11781 · Severity: high · CVSS 7.8 · Published 2025-12-02

Technologies: Circutor Sge-Plc50, Circutor Sge-Plc50 Firmware, Circutor Sge-Plc1000 Firmware, Circutor Sge-Plc1000. Vendors: Circutor.

Executive brief

Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The affected firmware contains a hardcoded static authentication key. An attacker with local access to the device can extract this key (e.g., by analysing the firmware image or memory dump) and create valid firmware update packages. This bypasses all intended access controls and grants full administrative privileges.

Affected products

circutor sge-plc50
circutor sge-plc50_firmware
circutor sge-plc1000_firmware
circutor sge-plc1000

Related threats

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