# CVE-2023-49617: MachineSense FeverWarn Missing Authentication for Critical Function

> Remote attackers can access the MachineSense FeverWarn API without authentication to retrieve and modify sensitive information.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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:** 1 Feb 2024
- **Updated:** 6 Jun 2025
- **Also known as:** GHSA-57qm-6jgh-x438

## What is CVE-2023-49617?

CVE-2023-49617 is a critical missing authorization vulnerability in MachineSense FeverWarn, published on 1 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The MachineSense application programmable interface (API) is improperly protected and can be accessed without authentication. A remote attacker could retrieve and modify sensitive information without any authentication.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2023-49617?

It affects 1 product.


Products: Machinesense Feverwarn Firmware.

## How do I fix CVE-2023-49617?

No fix has been published for CVE-2023-49617 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49617 being exploited?

There is no known exploitation of CVE-2023-49617 in the wild and no public exploit code.

## Other vulnerabilities in MachineSense FeverWarn

- [CVE-2023-46706](https://insights.sbomify.com/CVE-2023-46706/): MachineSense FeverWarn Use of Hard-coded Credentials (critical 9.1)
- [CVE-2023-47867](https://insights.sbomify.com/CVE-2023-47867/): MachineSense FeverWarn Improper Access Control (high 8.8)
- [CVE-2023-49610](https://insights.sbomify.com/CVE-2023-49610/): MachineSense FeverWarn Improper Input Validation (high 8.1)
- [CVE-2023-6221](https://insights.sbomify.com/CVE-2023-6221/): MachineSense FeverWarn Missing Authentication for Critical Function (high 7.7)
- [CVE-2023-49115](https://insights.sbomify.com/CVE-2023-49115/): MachineSense FeverWarn Missing Authentication for Critical Function (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49617 and fix it if it is affected.

What it is: CVE-2023-49617 is a critical missing authorization vulnerability in MachineSense FeverWarn, published on 1 Feb 2024. 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-2023-49617 in the wild and no public exploit code.

Affected product: MachineSense FeverWarn. 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-2023-49617/ (Markdown: https://insights.sbomify.com/CVE-2023-49617/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49617
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49617
- OSV: https://osv.dev/vulnerability/CVE-2023-49617

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49617/
Summaries are generated and may contain mistakes; the official description above is the record.