CVE-2025-11778: Circutor Sge-PLC1000 Firmware

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Stack-based buffer overflow in Circutor SGE-PLC1000/SGE-PLC50 v0.9.2. This vulnerability allows an attacker to remotely exploit memory corruption through the 'read_packet()' function of the TACACSPLUS implementation.

Affected products

• Circutor Sge-PLC1000 Firmware: version 0.9.2 only
• Circutor Sge-PLC50 Firmware: version 0.9.2 only

Published 2025-12-02. Last modified 2026-06-17.