Critical · published December 2, 2025
⚡ A naughty little overflow lies in wait! The 'ShowDownload()' function in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2 is primed for mischief, allowing attackers to bypass a 64-byte limit by inputting too much data! Think of this like overstuffing a suitcase. If you try to pack in too many clothes without considering space, the suitcase bursts open! In this case, when the input exceeds 64 bytes, it spills over into other memory areas, potentially causing chaos. An attacker can exploit this buffer overflow to overwrite the memory stack, leading to unexpected behavior or even remote code execution. This could allow them to crash the system, steal sensitive data, or gain unauthorized access, unleashing absolute mayhem!
Think of this like overstuffing a suitcase. If you try to pack in too many clothes without considering space, the suitcase bursts open! In this case, when the input exceeds 64 bytes, it spills over into other memory areas, potentially causing chaos. This stack-based buffer overflow occurs because the 'ShowDownload()' function does not validate the length of user input provided to the 'meter' parameter, allowing for excessive input to exceed the allocated buffer size.
An attacker can exploit this buffer overflow to overwrite the memory stack, leading to unexpected behavior or even remote code execution. This could allow them to crash the system, steal sensitive data, or gain unauthorized access, unleashing absolute mayhem! To safeguard against this vulnerability, promptly update to the latest available version of Circutor firmware that addresses this issue. Additionally, consider implementing input validation measures to ensure that any user input fits within the expected limits. Don't delay—tighten up your defenses! You've got this! With a little vigilance and timely action, you can lock this down in no time! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| circutor/sge-plc1000_firmware | all versions | — |
| circutor/sge-plc50_firmware | all versions | — |