CVE-2020-16234 FATEK Automation PLC WinProladder

High 7.8 Published 30 Sep 2020 Updated 4 Aug 2024

A stack-based buffer overflow in FATEK WinProladder allows remote code execution when a user opens a malicious file.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2020-16234?

CVE-2020-16234 is a high-severity memory corruption vulnerability in FATEK Automation PLC WinProladder, published on 30 Sep 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

In PLC WinProladder Version 3.28 and prior, a stack-based buffer overflow vulnerability can be exploited when a valid user opens a specially crafted file, which may allow an attacker to remotely execute arbitrary code.

Weakness: CWE-121

Which versions are affected by CVE-2020-16234?

It affects 1 product.

Products include Fatek Winproladder.

How do I fix CVE-2020-16234?

No fix has been published for CVE-2020-16234 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-2020-16234 being exploited?

There is no known exploitation of CVE-2020-16234 in the wild and no public exploit code.

Sources

Also known as GHSA-pwwx-2gvr-j6qv.