CVE-2025-11779 Stack-based buffer overflow vulnreability in Circutor SGE-PLC1000/SGE-PLC50

Critical 9.4 Published 2 Dec 2025 Updated 2 Dec 2025

A stack-based buffer overflow in Circutor PLCs allows remote code execution via unsanitized web request parameters.

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-2025-11779?

CVE-2025-11779 is a critical 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 CircutorSGE-PLC1000/SGE-PLC50 v9.0.2. The 'SetLan' function is invoked when a new configuration is applied. This new configuration function is activated by a management web request, which can be invoked by a user when making changes to the 'index.cgi' web application. The parameters are not being sanitised, which could lead to command injection.

Weakness: CWE-121

Which versions are affected by CVE-2025-11779?

It affects 2 products.

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

How do I fix CVE-2025-11779?

No fix has been published for CVE-2025-11779 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-2025-11779 being exploited?

There is no known exploitation of CVE-2025-11779 in the wild and no public exploit code.

Sources

Also known as GHSA-fggc-v5pw-8q2g.