# CVE-2025-27023: Improper Input Validation in Infinera G42

> Remote authenticated users can read arbitrary OS files on Infinera G42 devices via crafted CLI commands in the web interface.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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-34v7-fvgc-mxc2

## What is CVE-2025-27023?

CVE-2025-27023 is a medium-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

Lack or insufficent input validation in WebGUI CLI web in Infinera G42 
version R6.1.3 allows remote authenticated users to read all OS files 
via crafted CLI commands.

Details: The web interface based management of the Infinera G42 appliance enables the feature of
 executing a restricted set of commands. This feature 
also offers the option to execute a script-file already present on the target
 device. When a non-script or incorrect file is specified, the content 
of the file is shown along with an error message. Due to an execution of the http service with a privileged user all files on the file system can be viewed this way.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-27023?

It affects 1 product.


Products: Nokia G42 Firmware.

## How do I fix CVE-2025-27023?

No fix has been published for CVE-2025-27023 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27023 being exploited?

There is no known exploitation of CVE-2025-27023 in the wild and no public exploit code.

## Other vulnerabilities in Infinera G42

- [CVE-2025-27022](https://insights.sbomify.com/CVE-2025-27022/): Path Traversal Vulnerability in Infinera G42 (high 7.5)
- [CVE-2025-27021](https://insights.sbomify.com/CVE-2025-27021/): Operating System Misconfiguration in Infinera G42 (high 7.0)
- [CVE-2025-27024](https://insights.sbomify.com/CVE-2025-27024/): Improper File Access in Infinera G42 (medium 6.5)
- [CVE-2025-27026](https://insights.sbomify.com/CVE-2025-27026/): Improper Access Control Granularity impacting Infinera G42 (medium 4.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27023 and fix it if it is affected.

What it is: CVE-2025-27023 is a medium-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-2025-27023 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-2025-27023/ (Markdown: https://insights.sbomify.com/CVE-2025-27023/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27023
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27023
- OSV: https://osv.dev/vulnerability/CVE-2025-27023

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27023/
Summaries are generated and may contain mistakes; the official description above is the record.