CVE-2021-33002 Memory corruption in WebAccess HMI Designer

High 7.8 Published 24 Jun 2021 Updated 3 Aug 2024

An attacker can execute arbitrary code by tricking a user into opening a malicious project file in WebAccess HMI Designer.

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-2021-33002?

CVE-2021-33002 is a high-severity memory corruption vulnerability in WebAccess HMI Designer, published on 24 Jun 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

Opening a maliciously crafted project file may cause an out-of-bounds write, which may allow an attacker to execute arbitrary code. User interaction is require on the WebAccess HMI Designer (versions 2.1.9.95 and prior).

Weakness: CWE-787

Which versions are affected by CVE-2021-33002?

It affects 1 product.

Products include Advantech Webaccess\/Hmi Designer.

How do I fix CVE-2021-33002?

No fix has been published for CVE-2021-33002 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-2021-33002 being exploited?

There is no known exploitation of CVE-2021-33002 in the wild and no public exploit code.

Sources

Also known as GHSA-rv7f-8vhf-g8q8.