CVE-2025-11781 — HIGH (7.8)

Vulnerability 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.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Circutor	Sge-Plc1000 Firmware	9.0.2
Circutor	Sge-Plc1000	-
Circutor	Sge-Plc50 Firmware	9.0.2
Circutor	Sge-Plc50	-

Related Weaknesses (CWE)

CWE-321

References

https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-Third Party Advisory

FAQ

What is CVE-2025-11781?

CVE-2025-11781 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 extr...

How severe is CVE-2025-11781?

CVE-2025-11781 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-11781?

Check the references section above for vendor advisories and patch information. Affected products include: Circutor Sge-Plc1000 Firmware, Circutor Sge-Plc1000, Circutor Sge-Plc50 Firmware, Circutor Sge-Plc50.