# CVE-2023-41139: Null dereference in AutoCAD, Advance Steel and Civil 3D

> Attackers can execute arbitrary code by tricking users into opening malicious STP files in Autodesk CAD applications.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Nov 2023
- **Updated:** 8 Oct 2026
- **Also known as:** GHSA-7r6c-c52h-pf9p

## What is CVE-2023-41139?

CVE-2023-41139 is a high-severity vulnerability in Autodesk Autocad, published on 23 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A maliciously crafted STP file when parsed through Autodesk AutoCAD 2024 and 2023 can be used to dereference an untrusted pointer. This vulnerability, along with other vulnerabilities, could lead to code execution in the current process.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), CWE-822 (Untrusted Pointer Dereference)

## Which versions are affected by CVE-2023-41139?

It affects 10 products.


Products: Autodesk Autocad, Autodesk Autocad Advance Steel, Autodesk Autocad Architecture, Autodesk Autocad Civil 3d, Autodesk Autocad Electrical, Autodesk Autocad Lt, Autodesk Autocad Map 3d, Autodesk Autocad Mechanical, Autodesk Autocad Mep, Autodesk Autocad Plant 3d.

## How do I fix CVE-2023-41139?

No fix has been published for CVE-2023-41139 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-41139 being exploited?

There is no known exploitation of CVE-2023-41139 in the wild and no public exploit code.

## Other vulnerabilities in Autodesk Autocad

- [CVE-2023-29073](https://insights.sbomify.com/CVE-2023-29073/): Memory corruption in AutoCAD, Advance Steel and Civil 3D (critical 9.8)
- [CVE-2023-29074](https://insights.sbomify.com/CVE-2023-29074/): Memory corruption in AutoCAD, Advance Steel and Civil 3D (critical 9.8)
- [CVE-2023-29075](https://insights.sbomify.com/CVE-2023-29075/): Memory corruption in AutoCAD, Advance Steel and Civil 3D (critical 9.8)
- [CVE-2023-29076](https://insights.sbomify.com/CVE-2023-29076/): Memory corruption in AutoCAD, Advance Steel and Civil 3D (critical 9.8)
- [CVE-2024-7991](https://insights.sbomify.com/CVE-2024-7991/): Autodesk AutoCAD DWG Out-of-Bounds Write Code Execution Vulnerability (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-41139 and fix it if it is affected.

What it is: CVE-2023-41139 is a high-severity vulnerability in Autodesk Autocad, published on 23 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-41139 in the wild and no public exploit code.

Affected product: Autodesk Autocad. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-41139/ (Markdown: https://insights.sbomify.com/CVE-2023-41139/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-41139
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-41139
- OSV: https://osv.dev/vulnerability/CVE-2023-41139

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-41139/
Summaries are generated and may contain mistakes; the official description above is the record.