# CVE-2023-0321: Disclosure of Sensitive Information on Campbell Scientific Products

> Attackers can download, modify, and upload configuration files on Campbell Scientific dataloggers via the default PakBus port, exposing sensitive network information.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Jan 2023
- **Updated:** 27 Mar 2025
- **Also known as:** GHSA-4wqr-g68x-cv52

## What is CVE-2023-0321?

CVE-2023-0321 is a critical vulnerability in Campbell Scientific CR1000, published on 25 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Campbell Scientific dataloggers CR6, CR300, CR800, CR1000 and CR3000 may allow an attacker to download configuration files, which may contain sensitive information about the internal network. From factory defaults, the mentioned datalogges have HTTP and PakBus enabled. The devices, with the default configuration, allow this situation via the PakBus port. The exploitation of this vulnerability may allow an attacker to download, modify, and upload new configuration files.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-0321?

It affects 5 products.


Products: Campbellsci Cr1000 Firmware, Campbellsci Cr3000 Firmware, Campbellsci Cr300 Firmware, Campbellsci Cr6 Firmware, Campbellsci Cr800 Firmware.

## How do I fix CVE-2023-0321?

No fix has been published for CVE-2023-0321 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0321 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0321 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0321 and fix it if it is affected.

What it is: CVE-2023-0321 is a critical vulnerability in Campbell Scientific CR1000, published on 25 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0321 exists.

Affected product: Campbell Scientific CR1000. 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-2023-0321/ (Markdown: https://insights.sbomify.com/CVE-2023-0321/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0321
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0321
- OSV: https://osv.dev/vulnerability/CVE-2023-0321

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0321/
Summaries are generated and may contain mistakes; the official description above is the record.