SecuriTricks - CVE-2025-11781

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.

Product(s) Impacted

Vendor	Product	Versions
Circutor	Sge-plc1000 Firmware Sge-plc1000 Sge-plc50 Firmware Sge-plc50	9.0.2 - 9.0.2 -

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-321

Use of Hard-coded Cryptographic Key

The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
o	circutor	sge-plc1000_firmware	9.0.2	/	/	/	/	/	/	/
h	circutor	sge-plc1000	-	/	/	/	/	/	/	/
o	circutor	sge-plc50_firmware	9.0.2	/	/	/	/	/	/	/
h	circutor	sge-plc50	-	/	/	/	/	/	/	/

References

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

CVSS Score

8.6 / 10

CVSS Data - 4.0

Attack Vector: LOCAL
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: NONE
User Interaction: NONE
Scope:
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: HIGH
Exploit Maturity: NOT_DEFINED

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: Dec. 2, 2025, 1:15 p.m.
Last Modified: Dec. 3, 2025, 7:10 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

cve-coordination@incibe.es

CVE-2025-11781