# CVE-2019-3939: Hardcoded credentials in Crestron AirMedia

> Attackers can use default admin credentials to gain privileged access to Crestron AirMedia devices via the web interface.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Apr 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-348m-h4rf-cr2v

## What is CVE-2019-3939?

CVE-2019-3939 is a critical vulnerability in Crestron AirMedia, published on 30 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Crestron AM-100 with firmware 1.6.0.2 and AM-101 with firmware 2.7.0.2 use default credentials admin/admin and moderator/moderator for the web interface. An unauthenticated, remote attacker can use these credentials to gain privileged access to the device.

Weakness: CWE-798 (Use of Hard-coded Credentials), CWE-16

## Which versions are affected by CVE-2019-3939?

It affects 2 products.


Products: Crestron Am-100 Firmware, Crestron Am-101 Firmware.

## How do I fix CVE-2019-3939?

No fix has been published for CVE-2019-3939 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-3939 being exploited?

There is no known exploitation of CVE-2019-3939 in the wild and no public exploit code.

## Other vulnerabilities in Crestron AirMedia

- [CVE-2019-3925](https://insights.sbomify.com/CVE-2019-3925/): Command injection in Crestron AirMedia (critical 9.8)
- [CVE-2019-3926](https://insights.sbomify.com/CVE-2019-3926/): Command injection in Crestron AirMedia (critical 9.8)
- [CVE-2019-3927](https://insights.sbomify.com/CVE-2019-3927/): Auth bypass in Crestron AirMedia (critical 9.8)
- [CVE-2019-3932](https://insights.sbomify.com/CVE-2019-3932/): Hardcoded credentials in Crestron AirMedia (critical 9.8)
- [CVE-2019-3935](https://insights.sbomify.com/CVE-2019-3935/): Missing authorization in Crestron AirMedia (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3939 and fix it if it is affected.

What it is: CVE-2019-3939 is a critical vulnerability in Crestron AirMedia, published on 30 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-3939 in the wild and no public exploit code.

Affected product: Crestron AirMedia. 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-2019-3939/ (Markdown: https://insights.sbomify.com/CVE-2019-3939/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3939
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3939
- OSV: https://osv.dev/vulnerability/CVE-2019-3939

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3939/
Summaries are generated and may contain mistakes; the official description above is the record.