# CVE-2024-41173: Beckhoff: Local authentication bypass in the IPC-Diagnostics package included in TwinCAT/BSD

> A local attacker can bypass authentication in the IPC-Diagnostics package of TwinCAT/BSD, potentially escalating privileges.

- **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:** 27 Aug 2024
- **Updated:** 27 Aug 2024
- **Also known as:** GHSA-p9fm-h38h-99qw

## What is CVE-2024-41173?

CVE-2024-41173 is a high-severity authentication bypass vulnerability in Beckhoff IPC Diagnostics package, published on 27 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The IPC-Diagnostics package included in TwinCAT/BSD is vulnerable to a local authentication bypass by a low privileged attacker.

Weakness: CWE-288 (Authentication Bypass Using an Alternate Path or Channel)

## Which versions are affected by CVE-2024-41173?

It affects 2 products.


Products: Beckhoff Ipc Diagnostics Package, Beckhoff Twincat\/Bsd.

## How do I fix CVE-2024-41173?

No fix has been published for CVE-2024-41173 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-41173 being exploited?

There is no known exploitation of CVE-2024-41173 in the wild and no public exploit code.

## Other vulnerabilities in Beckhoff IPC Diagnostics package

- [CVE-2024-41174](https://insights.sbomify.com/CVE-2024-41174/): Beckhoff: Improper input neutralization vulnerability in the IPC-Diagnostics package in TwinCAT/BSD (high 7.3)
- [CVE-2024-41175](https://insights.sbomify.com/CVE-2024-41175/): Beckhoff: Local Denial-of-Service vulnerability in TwinCAT/BSD and the IPC-Diagnostics package (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-41173 and fix it if it is affected.

What it is: CVE-2024-41173 is a high-severity authentication bypass vulnerability in Beckhoff IPC Diagnostics package, published on 27 Aug 2024. 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-2024-41173 in the wild and no public exploit code.

Affected product: Beckhoff IPC Diagnostics package. 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-2024-41173/ (Markdown: https://insights.sbomify.com/CVE-2024-41173/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-41173
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-41173
- OSV: https://osv.dev/vulnerability/CVE-2024-41173

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-41173/
Summaries are generated and may contain mistakes; the official description above is the record.