CVE-2025-11788: Circutor Sge-PLC1000 Firmware

Critical severity, CVSS 9.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Heap-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'ShowSupervisorParameters()' function, there is an unlimited user input that is copied to a fixed-size buffer via 'sprintf()'. The 'GetParameter(meter)' function retrieves the user input, which is directly incorporated into a buffer without size validation. An attacker can provide an excessively large input for the 'meter' parameter.

Affected products

  • Circutor Sge-PLC1000 Firmware: version 9.0.2 only
  • Circutor Sge-PLC50 Firmware: version 9.0.2 only

Published 2025-12-02. Last modified 2026-09-26.