Vulnerability in Circutor Sge-Plc1000
CVE-2025-11781
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Circutor Sge-Plc1000
- Circutor Sge-Plc1000 Firmware — versions 9.0.2
- Circutor Sge-Plc50
- Circutor Sge-Plc50 Firmware — versions 9.0.2
- Sge-Plc1000 Sge-Plc50 Circutor — versions 9.0.2
Weakness classification (CWE)
References
- www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circuto… (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-11781?
- CVE-2025-11781 is a high-severity vulnerability in Circutor Sge-Plc1000, classified under Use of Hard-coded Cryptographic Key. CVSS score: 7.8/10. Published 2025-12-02.
- How severe is CVE-2025-11781?
- High severity. CVSS v3 base score is 7.8 out of 10.