CVE-2021-32975 Memory corruption in Cscape

High 7.8 Published 25 Aug 2021 Updated 3 Aug 2024

Attackers can execute arbitrary code by tricking users into opening malicious project files in Cscape HMI software.

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-2021-32975?

CVE-2021-32975 is a high-severity memory corruption vulnerability in Cscape, published on 25 Aug 2021. 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

Cscape (All Versions prior to 9.90 SP5) lacks proper validation of user-supplied data when parsing project files. This could lead to an out-of-bounds read. An attacker could leverage this vulnerability to execute code in the context of the current process.

Weakness: CWE-125

Which versions are affected by CVE-2021-32975?

It affects 1 product.

Products include Hornerautomation Cscape.

How do I fix CVE-2021-32975?

No fix has been published for CVE-2021-32975 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-2021-32975 being exploited?

There is no known exploitation of CVE-2021-32975 in the wild and no public exploit code.

Sources

Also known as GHSA-j9g4-rrpx-x359.