# CVE-2023-5402: Privilege escalation in C-Bus Toolkit

> Remote attackers can achieve code execution and privilege escalation via the network transfer command in Schneider Electric C-Bus Toolkit.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Oct 2023
- **Updated:** 27 Feb 2025
- **Also known as:** GHSA-hxm5-w6ww-6qfp

## What is CVE-2023-5402?

CVE-2023-5402 is a critical vulnerability in Schneider Electric C-Bus Toolkit, published on 4 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A CWE-269: Improper Privilege Management vulnerability exists that could cause a remote
code execution when the transfer command is used over the network.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2023-5402?

It affects 1 product.


Products: Schneider-Electric C-Bus Toolkit.

## How do I fix CVE-2023-5402?

No fix has been published for CVE-2023-5402 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-5402 being exploited?

There is no known exploitation of CVE-2023-5402 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric C-Bus Toolkit

- [CVE-2021-22748](https://insights.sbomify.com/CVE-2021-22748/): Path traversal in C-Bus Toolkit (V1.15.9 and prior), C-Gate Server (V2.11.7 and prior) (high 8.8)
- [CVE-2021-22717](https://insights.sbomify.com/CVE-2021-22717/): Path traversal in C-Bus Toolkit V1.15.7 and prior (high 8.8)
- [CVE-2021-22719](https://insights.sbomify.com/CVE-2021-22719/): Path traversal in C-Bus Toolkit V1.15.7 and prior (high 8.8)
- [CVE-2021-22716](https://insights.sbomify.com/CVE-2021-22716/): Privilege escalation in C-Bus Toolkit (high 7.8)
- [CVE-2021-22718](https://insights.sbomify.com/CVE-2021-22718/): Path traversal in C-Bus Toolkit V1.15.7 and prior (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-5402 and fix it if it is affected.

What it is: CVE-2023-5402 is a critical vulnerability in Schneider Electric C-Bus Toolkit, published on 4 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-5402 in the wild and no public exploit code.

Affected product: Schneider Electric C-Bus Toolkit. 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-2023-5402/ (Markdown: https://insights.sbomify.com/CVE-2023-5402/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-5402
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-5402
- OSV: https://osv.dev/vulnerability/CVE-2023-5402

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-5402/
Summaries are generated and may contain mistakes; the official description above is the record.