7.8High
Circutor Sge-Plc1000 Firmware
CVE-2025-11781
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.
What this means for your business
- It affects Circutor Sge-Plc1000 Firmware. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it only with access to the machine itself, with an ordinary user login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.1% chance of attack attempts being seen in the next 30 days, ranking above 2% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Circutor Sge-Plc1000 Firmware, and which version. The affected versions are listed further down this page.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.8 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- CVSS v4
- 8.6
- Weakness
- CWE-321
- Assigned by
- cve-coordination@incibe.es
Dates
- Published
- 2025-12-02
- Last modified
- 2026-09-26
- Sources
- NVD
Affected products
- Circutor Sge-Plc1000 Firmware9.0.2
- Circutor Sge-Plc1000all versions
- Circutor Sge-Plc50 Firmware9.0.2
- Circutor Sge-Plc50all versions
As listed in the NVD configuration data. Not a statement about your estate.