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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circutor-products-0	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:circutor:sge-plc1000_firmware:9.0.2:*:*:*:*:*:*:*

cpe:2.3:h:circutor:sge-plc1000:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:circutor:sge-plc50_firmware:9.0.2:*:*:*:*:*:*:*

cpe:2.3:h:circutor:sge-plc50:-:*:*:*:*:*:*:*

History

03 Dec 2025, 19:10

Type	Values Removed	Values Added
References	~~() https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circutor-products-0 -~~	() https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circutor-products-0 - Third Party Advisory
First Time		Circutor sge-plc50 Circutor sge-plc1000 Firmware Circutor sge-plc50 Firmware Circutor Circutor sge-plc1000
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8
CPE		cpe:2.3:o:circutor:sge-plc1000_firmware:9.0.2:::::::* cpe:2.3:h:circutor:sge-plc1000:-:::::::* cpe:2.3:h:circutor:sge-plc50:-:::::::* cpe:2.3:o:circutor:sge-plc50_firmware:9.0.2:::::::*

02 Dec 2025, 13:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-02 13:15

Updated : 2025-12-03 19:10

NVD link : CVE-2025-11781

Mitre link : CVE-2025-11781

CVE.ORG link : CVE-2025-11781

JSON object : View

Products Affected

circutor

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

CWE

CWE-321

Use of Hard-coded Cryptographic Key

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