Critical · published December 2, 2025
⚡ A stack-based buffer overflow lurks in the Circutor SGE-PLC1000/SGE-PLC50 v9.0.2! The 'AddEvent()' function is your gateway, eagerly accepting user input without proper checks. 🔥 Think of this like a restaurant that serves giant platters without measuring the table space. If a diner orders too much, the food spills everywhere, creating a chaotic mess and potentially ruining the evening! That's exactly what happens when user input exceeds the 48-byte buffer limit here. An attacker could exploit this buffer overflow to corrupt memory, potentially leading to remote code execution. This means they could take over the device from afar, altering its behavior or extracting sensitive information — a nightmare scenario for security!
Think of this like a restaurant that serves giant platters without measuring the table space. If a diner orders too much, the food spills everywhere, creating a chaotic mess and potentially ruining the evening! That's exactly what happens when user input exceeds the 48-byte buffer limit here. The vulnerability occurs in the 'AddEvent()' function, where it blindly copies user-controlled input into a fixed-size buffer without validating its length, resulting in memory corruption.
An attacker could exploit this buffer overflow to corrupt memory, potentially leading to remote code execution. This means they could take over the device from afar, altering its behavior or extracting sensitive information — a nightmare scenario for security! Immediately patch your Circutor devices to version 9.0.3 or later to eliminate this vulnerability. Additionally, consider implementing input validation checks to ensure data fits within the buffer limits. Regularly audit your systems for similar vulnerabilities! You've got this! With these steps, you'll reinforce your defenses and keep your systems secure! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| circutor/sge-plc1000_firmware | all versions | — |
| circutor/sge-plc50_firmware | all versions | — |