CVE-2025-11781 HIGH

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

Vendor Sge-Plc1000 Sge-Plc50
Product Circutor
Weakness CWE-321
Published December 2, 2025
Last update December 2, 2025
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 2, 2025 CVE published
December 2, 2025 Record updated