# CVE-2019-25227: Tellion HN-2204AP Unauthenticated Configuration Disclosure

> Unauthenticated attackers can retrieve sensitive configuration files from Tellion HN-2204AP routers, exposing credentials and network settings.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Nov 2025
- **Updated:** 28 Nov 2025
- **Also known as:** GHSA-6qj6-gv54-xg63

## What is CVE-2019-25227?

CVE-2019-25227 is a high-severity vulnerability in Tellion, Inc. HN-2204AP Router, published on 26 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Tellion HN-2204AP routers contain an unauthenticated configuration disclosure vulnerability in the /cgi-bin/system_config_file management endpoint. The endpoint allows remote retrieval of a compressed configuration archive without requiring authentication or authorization. The exposed configuration may include administrative credentials, wireless keys, and other sensitive settings, enabling an unauthenticated attacker to obtain information that can facilitate further compromise of the device or network.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2019-25227?


## How do I fix CVE-2019-25227?

No fix has been published for CVE-2019-25227 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25227 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25227 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25227 and fix it if it is affected.

What it is: CVE-2019-25227 is a high-severity vulnerability in Tellion, Inc. HN-2204AP Router, published on 26 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25227 exists.

Affected product: Tellion, Inc. HN-2204AP Router. 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-2019-25227/ (Markdown: https://insights.sbomify.com/CVE-2019-25227/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25227
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25227
- OSV: https://osv.dev/vulnerability/CVE-2019-25227

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-25227/
Summaries are generated and may contain mistakes; the official description above is the record.