# CVE-2023-45213: Westermo Lynx Permissive Cross-domain Policy with Untrusted Domains

> An attacker with device access can execute malicious code due to permissive cross-domain policies, compromising the Westermo Lynx device.

- **Severity:** Medium 6.6 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Feb 2024
- **Updated:** 15 May 2025
- **Also known as:** GHSA-wf5c-mcqp-r6mq

## What is CVE-2023-45213?

CVE-2023-45213 is a medium-severity vulnerability in Westermo Lynx, published on 6 Feb 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A potential attacker with access to the Westermo Lynx device would be able to execute malicious code that could affect the correct functioning of the device.

Weakness: CWE-697 (Incorrect Comparison), CWE-942 (Permissive Cross-domain Security Policy with Untrusted Domains)

## Which versions are affected by CVE-2023-45213?

It affects 1 product.


Products: Westermo L206-F2g Firmware.

## How do I fix CVE-2023-45213?

No fix has been published for CVE-2023-45213 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-45213 being exploited?

There is no known exploitation of CVE-2023-45213 in the wild and no public exploit code.

## Other vulnerabilities in Westermo Lynx

- [CVE-2023-38579](https://insights.sbomify.com/CVE-2023-38579/): Westermo Lynx 206-F2G Cross-Site Request Forgery (high 8.0)
- [CVE-2023-45735](https://insights.sbomify.com/CVE-2023-45735/): Westermo Lynx Code Injection (high 8.0)
- [CVE-2023-40544](https://insights.sbomify.com/CVE-2023-40544/): Westermo Lynx Cleartext Transmission of Sensitive Information (medium 5.7)
- [CVE-2023-40143](https://insights.sbomify.com/CVE-2023-40143/): Westermo Lynx (medium 5.4)
- [CVE-2023-42765](https://insights.sbomify.com/CVE-2023-42765/): Westermo Lynx Cross-site Scripting (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-45213 and fix it if it is affected.

What it is: CVE-2023-45213 is a medium-severity vulnerability in Westermo Lynx, published on 6 Feb 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-45213 in the wild and no public exploit code.

Affected product: Westermo Lynx. 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-2023-45213/ (Markdown: https://insights.sbomify.com/CVE-2023-45213/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-45213
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-45213
- OSV: https://osv.dev/vulnerability/CVE-2023-45213

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-45213/
Summaries are generated and may contain mistakes; the official description above is the record.