CVE-2025-11783 Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50

High 8.5 Published 2 Dec 2025 Updated 2 Dec 2025

A stack-based buffer overflow in Circutor PLCs allows remote code execution via malicious username input in the AddEvent function.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-11783?

CVE-2025-11783 is a high-severity memory corruption vulnerability in SGE-PLC1000 SGE-PLC50 Circutor, published on 2 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The vulnerability is found in the 'AddEvent()' function when copying the user-controlled username input to a fixed-size buffer (48 bytes) without boundary checking. This can lead to memory corruption, resulting in possible remote code execution.

Weakness: CWE-121

Which versions are affected by CVE-2025-11783?

It affects 2 products.

Products include Circutor Sge-Plc1000 Firmware, Circutor Sge-Plc50 Firmware.

How do I fix CVE-2025-11783?

No fix has been published for CVE-2025-11783 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-11783 being exploited?

There is no known exploitation of CVE-2025-11783 in the wild and no public exploit code.

Sources

Also known as GHSA-pjhf-85h3-g8m3.