CVE-2025-11781
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
ProductCircutor Sge-plc1000 Firmware
PublishedDec 2, 2025
First seenDec 2, 2025
Weakness typeCWE-321CWE-321
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| circutor sge-plc1000_firmware | 9.0.2 | — |
| circutor sge-plc50_firmware | 9.0.2 | — |
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