CVE-2021-40156 Memory corruption in Autodesk Navisworks
Attackers can execute arbitrary code by tricking users into opening a maliciously crafted DWG file in Autodesk Navisworks.
- 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-2021-40156?
CVE-2021-40156 is a high-severity memory corruption vulnerability in Autodesk Navisworks, published on 15 Sep 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
A maliciously crafted DWG file in Autodesk Navisworks 2019, 2020, 2021, 2022 can be forced to write beyond allocated boundaries when parsing the DWG files. This vulnerability can be exploited to execute arbitrary code.
Weakness: CWE-787
Which versions are affected by CVE-2021-40156?
It affects 1 product.
Products include Autodesk Navisworks.
How do I fix CVE-2021-40156?
No fix has been published for CVE-2021-40156 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-2021-40156 being exploited?
There is no known exploitation of CVE-2021-40156 in the wild and no public exploit code.
Other vulnerabilities in Autodesk Navisworks
- CVE-2025-1658 DWFX File Parsing Out-of-Bounds Read Vulnerability
- CVE-2025-1659 DWFX File Parsing Out-of-Bounds Read Vulnerability
- CVE-2025-1660 DWFX File Parsing Memory Corruption Vulnerability
- CVE-2024-11422 DWFX File Parsing Vulnerabilities in Autodesk Navisworks Desktop Software
- CVE-2024-12178 DWFX File Parsing Vulnerabilities in Autodesk Navisworks Desktop Software
Sources
Also known as GHSA-7qg6-74r3-86w6.