# CVE-2025-27025: Improper File Access in Infinera G42

> Attackers can exploit directory traversal in the G42 service to read or write arbitrary files as root, potentially leading to code execution.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 2 Jul 2025
- **Updated:** 2 Jul 2025
- **Also known as:** GHSA-f553-27vh-gf4h

## What is CVE-2025-27025?

CVE-2025-27025 is a high-severity path traversal vulnerability in Infinera G42, published on 2 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The target device exposes a service on a specific TCP port with a configured
 endpoint. The access to that endpoint is granted using a Basic Authentication
 method. The endpoint accepts also the PUT method and it is possible to 
write files on the target device file system. Files are written as root.
 Using Postman it is possible to perform a Directory Traversal attack 
and write files into any location of the device file system. Similarly to the PUT method, it is possible to leverage the 
same mechanism to read any file from the file system by using the GET 
method.

Weakness: CWE-280 (Improper Handling of Insufficient Permissions or Privileges)

## Which versions are affected by CVE-2025-27025?


## How do I fix CVE-2025-27025?

No fix has been published for CVE-2025-27025 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27025 being exploited?

There is no known exploitation of CVE-2025-27025 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27025 and fix it if it is affected.

What it is: CVE-2025-27025 is a high-severity path traversal vulnerability in Infinera G42, published on 2 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-27025 in the wild and no public exploit code.

Affected product: Infinera G42. 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-2025-27025/ (Markdown: https://insights.sbomify.com/CVE-2025-27025/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27025
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27025
- OSV: https://osv.dev/vulnerability/CVE-2025-27025

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27025/
Summaries are generated and may contain mistakes; the official description above is the record.