# CVE-2023-0203: Missing authorization in NVIDIA ConnectX Firmware

> An unprivileged user can exploit insufficient access control in NVIDIA ConnectX NIC firmware to cause a denial of service.

- **Severity:** Medium 5.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Apr 2023
- **Updated:** 4 Feb 2025
- **Also known as:** GHSA-9hf4-r86q-ffr6

## What is CVE-2023-0203?

CVE-2023-0203 is a medium-severity missing authorization vulnerability in NVIDIA ConnectX Firmware, published on 22 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

NVIDIA ConnectX-5, ConnectX-6, and ConnectX6-DX contain a vulnerability in the NIC firmware, where an unprivileged user can exploit insufficient granularity of access control, which may lead to denial of service.

Weakness: CWE-1220 (Insufficient Granularity of Access Control)

## Which versions are affected by CVE-2023-0203?

It affects 1 product.


Products: Nvidia Connectx Firmware.

## How do I fix CVE-2023-0203?

No fix has been published for CVE-2023-0203 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0203 being exploited?

There is no known exploitation of CVE-2023-0203 in the wild and no public exploit code.

## Other vulnerabilities in NVIDIA ConnectX Firmware

- [CVE-2023-0204](https://insights.sbomify.com/CVE-2023-0204/): Denial of service in NVIDIA ConnectX Firmware (medium 6.5)
- [CVE-2023-0205](https://insights.sbomify.com/CVE-2023-0205/): Missing authorization in NVIDIA ConnectX Firmware (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0203 and fix it if it is affected.

What it is: CVE-2023-0203 is a medium-severity missing authorization vulnerability in NVIDIA ConnectX Firmware, published on 22 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-0203 in the wild and no public exploit code.

Affected product: NVIDIA ConnectX Firmware. 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-2023-0203/ (Markdown: https://insights.sbomify.com/CVE-2023-0203/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0203
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0203
- OSV: https://osv.dev/vulnerability/CVE-2023-0203

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0203/
Summaries are generated and may contain mistakes; the official description above is the record.