# CVE-2019-3950: Hardcoded credentials in Basestation firmware

> Hardcoded root credentials in Arlo Basestation firmware allow attackers with physical serial access to gain full control of the device.

- **Severity:** Critical 9.8 (`CVSS:3.0/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:** 9 Jul 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-f4jg-785x-37x7

## What is CVE-2019-3950?

CVE-2019-3950 is a critical vulnerability in Arlo Basestation firmware, published on 9 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Arlo Basestation firmware 1.12.0.1_27940 and prior contain a hardcoded username and password combination that allows root access to the device when an onboard serial interface is connected to.

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

## Which versions are affected by CVE-2019-3950?

It affects 5 products.


Products: Arlo Vmb3010 Firmware, Arlo Vmb3500 Firmware, Arlo Vmb4000 Firmware, Arlo Vmb4500 Firmware, Arlo Vmb5000 Firmware.

## How do I fix CVE-2019-3950?

No fix has been published for CVE-2019-3950 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-3950 being exploited?

There is no known exploitation of CVE-2019-3950 in the wild and no public exploit code.

## Other vulnerabilities in Arlo Basestation firmware

- [CVE-2019-3949](https://insights.sbomify.com/CVE-2019-3949/): Misconfiguration in Basestation firmware (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3950 and fix it if it is affected.

What it is: CVE-2019-3950 is a critical vulnerability in Arlo Basestation firmware, published on 9 Jul 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-2019-3950 in the wild and no public exploit code.

Affected product: Arlo Basestation firmware. 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-2019-3950/ (Markdown: https://insights.sbomify.com/CVE-2019-3950/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3950
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3950
- OSV: https://osv.dev/vulnerability/CVE-2019-3950

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3950/
Summaries are generated and may contain mistakes; the official description above is the record.