CVE-2021-42706 AzeoTech DAQFactory

High 7.8 Published 15 Nov 2021 Updated 16 Sep 2024

An attacker can exploit a use-after-free flaw in Advantech HMI Designer to disclose information and execute arbitrary code.

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-2021-42706?

CVE-2021-42706 is a high-severity use after free vulnerability in Advantech HMI Designer, published on 15 Nov 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

This vulnerability could allow an attacker to disclose information and execute arbitrary code on affected installations of WebAccess/MHI Designer

Weakness: CWE-416

Which versions are affected by CVE-2021-42706?

It affects 1 product.

Products include Advantech Webaccess Hmi Designer.

How do I fix CVE-2021-42706?

No fix has been published for CVE-2021-42706 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2021-42706 being exploited?

There is no known exploitation of CVE-2021-42706 in the wild and no public exploit code.

Sources

Also known as GHSA-73jf-94cc-m479.