Is CVE-2025-11781 actively exploited?

No active exploitation of CVE-2025-11781 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-11781 be exploited remotely?

No. CVE-2025-11781 requires local access to exploit.

What is the CVSS score of CVE-2025-11781?

CVE-2025-11781 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2025-11781

CWE-321Published: December 2, 2025· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-11781 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.