What’s Vulnerable › Vulnerabilities

CVE-2025-11781: Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-02 · updated 2026-09-26
• Weakness: CWE-321

Description

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-PLC1000: 9.0.2
• CIRCUTOR Sge-Plc50 Firmware: 9.0.2

References

• https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circutor-products-0

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