CVE-2021-22678 Memory corruption in Cscape

High 7.8 Published Updated

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-2021-22678?

CVE-2021-22678 is a high-severity memory corruption vulnerability in Cscape, published on 23 Apr 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 SP4) lacks proper validation of user-supplied data when parsing project files. This could lead to memory corruption. An attacker could leverage this vulnerability to execute code in the context of the current process.

Weakness: CWE-787, CWE-20

Which versions are affected by CVE-2021-22678?

It affects 1 product.

Products include Hornerautomation Cscape.

How do I fix CVE-2021-22678?

No fix has been published for CVE-2021-22678 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-2021-22678 being exploited?

There is no known exploitation of CVE-2021-22678 in the wild and no public exploit code.

Sources

Also known as GHSA-r249-pphh-pcj9.

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