CVE-2025-11786 Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50

High 8.5 Published 2 Dec 2025 Updated 2 Dec 2025

Attackers can execute arbitrary shell commands via unsanitized input in the SetUserPassword function of Circutor PLCs.

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-2025-11786?

CVE-2025-11786 is a high-severity command injection 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. In the 'SetUserPassword()' function, the 'newPassword' parameter is directly embedded in a shell command string using 'sprintf()' without any sanitisation or validation, and then executed using 'system()'. This allows an attacker to inject arbitrary shell commands that will be executed with the same privileges as the application.

Weakness: CWE-121

Which versions are affected by CVE-2025-11786?

It affects 2 products.

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

How do I fix CVE-2025-11786?

No fix has been published for CVE-2025-11786 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2025-11786 being exploited?

There is no known exploitation of CVE-2025-11786 in the wild and no public exploit code.

Sources

Also known as GHSA-7wvg-7hg7-gfph.