# CVE-2025-64642: Mirion Medical EC2 Software NMIS BioDose Incorrect Permission Assignment for Critical Resource

> Insecure default file permissions allow local users to modify executables, potentially leading to code execution or privilege escalation.

- **Severity:** High 7.1 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Dec 2025
- **Updated:** 2 Dec 2025
- **Also known as:** GHSA-884g-x96w-frc5

## What is CVE-2025-64642?

CVE-2025-64642 is a high-severity vulnerability in Mirion Medical EC2 Software NMIS BioDose, published on 2 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

NMIS/BioDose V22.02 and previous versions' installation directory paths by default have insecure file permissions, which in certain deployment scenarios can enable users on client workstations to modify the program executables and libraries.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2025-64642?

It affects 1 product.


Products: Mirion Biodose\/Nmis.

## How do I fix CVE-2025-64642?

No fix has been published for CVE-2025-64642 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-64642 being exploited?

There is no known exploitation of CVE-2025-64642 in the wild and no public exploit code.

## Other vulnerabilities in Mirion Medical EC2 Software NMIS BioDose

- [CVE-2025-61940](https://insights.sbomify.com/CVE-2025-61940/): Mirion Medical EC2 Software NMIS BioDose Use of Client-Side Authentication (high 8.7)
- [CVE-2025-62575](https://insights.sbomify.com/CVE-2025-62575/): Mirion Medical EC2 Software NMIS BioDose Incorrect Permission Assignment for Critical Resource (high 8.7)
- [CVE-2025-64298](https://insights.sbomify.com/CVE-2025-64298/): Mirion Medical EC2 Software NMIS BioDose Incorrect Permission Assignment for Critical Resource (high 8.6)
- [CVE-2025-64778](https://insights.sbomify.com/CVE-2025-64778/): Mirion Medical EC2 Software NMIS BioDose Use of Hard-coded Credentials (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-64642 and fix it if it is affected.

What it is: CVE-2025-64642 is a high-severity vulnerability in Mirion Medical EC2 Software NMIS BioDose, published on 2 Dec 2025. 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-2025-64642 in the wild and no public exploit code.

Affected product: Mirion Medical EC2 Software NMIS BioDose. 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-2025-64642/ (Markdown: https://insights.sbomify.com/CVE-2025-64642/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-64642
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-64642
- OSV: https://osv.dev/vulnerability/CVE-2025-64642

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-64642/
Summaries are generated and may contain mistakes; the official description above is the record.