# CVE-2025-27851: Cross-site request forgery in n/a

> A network attacker can hijack WebSockets to take full control of a Garmin WDU if the victim visits a malicious site from a multihomed host.

- **Severity:** Critical 9.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 May 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-frpq-7mr9-hx8p

## What is CVE-2025-27851?

CVE-2025-27851 is a critical vulnerability in n/a, published on 13 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The locally served web site on the Garmin WDU (v1 1.4.6 and v2 5.0) allows a cross-site origin WebSocket hijacking attack. Among other uses, the WDU utilizes WebSockets to control settings, including administrative settings. This allows a network attacker to take full control of a WDU. To initiate an exploit of this vulnerability, the victim must (1) be utilizing a web browser on a multihomed host that has local interfaces on the Garmin Marine Network as well as another network, and (2) access a malicious third party website created by the attacker.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2025-27851?

It affects 1 product.


Products: Garmin Empirbus Wireless Display Unit Firmware.

## How do I fix CVE-2025-27851?

No fix has been published for CVE-2025-27851 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-27851 being exploited?

There is no known exploitation of CVE-2025-27851 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-27850](https://insights.sbomify.com/CVE-2025-27850/): Path traversal in n/a (high 7.5)
- [CVE-2025-27853](https://insights.sbomify.com/CVE-2025-27853/): Auth bypass in n/a (high 7.3)
- [CVE-2025-27852](https://insights.sbomify.com/CVE-2025-27852/): Cross-site scripting in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27851 and fix it if it is affected.

What it is: CVE-2025-27851 is a critical vulnerability in n/a, published on 13 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-27851 in the wild and no public exploit code.

Affected product: n/a. 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-2025-27851/ (Markdown: https://insights.sbomify.com/CVE-2025-27851/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27851
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27851
- OSV: https://osv.dev/vulnerability/CVE-2025-27851

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27851/
Summaries are generated and may contain mistakes; the official description above is the record.