# CVE-2020-15833: Hardcoded credentials in n/a

> Attackers can gain root access to Mofi Network routers via a hard-coded SSH public key in the Dropbear daemon.

- **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:** 1 Feb 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-pvm2-wchq-hwv5

## What is CVE-2020-15833?

CVE-2020-15833 is a critical vulnerability in n/a, published on 1 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered on Mofi Network MOFI4500-4GXeLTE 4.1.5-std devices. The Dropbear SSH daemon has been modified to accept an alternate hard-coded path to a public key that allows root access. This key is stored in a /rom location that cannot be modified by the device owner.

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

## Which versions are affected by CVE-2020-15833?

It affects 1 product.


Products: Mofinetwork Mofi4500-4gxelte Firmware.

## How do I fix CVE-2020-15833?

No fix has been published for CVE-2020-15833 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-15833 being exploited?

There is no known exploitation of CVE-2020-15833 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-13858](https://insights.sbomify.com/CVE-2020-13858/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2020-13859](https://insights.sbomify.com/CVE-2020-13859/): Auth bypass in n/a (critical 9.8)
- [CVE-2020-15835](https://insights.sbomify.com/CVE-2020-15835/): Auth bypass in n/a (critical 9.8)
- [CVE-2020-15836](https://insights.sbomify.com/CVE-2020-15836/): Command injection in n/a (critical 9.8)
- [CVE-2020-13856](https://insights.sbomify.com/CVE-2020-13856/): Information disclosure in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-15833 and fix it if it is affected.

What it is: CVE-2020-15833 is a critical vulnerability in n/a, published on 1 Feb 2021. 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-2020-15833 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-2020-15833/ (Markdown: https://insights.sbomify.com/CVE-2020-15833/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-15833
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-15833
- OSV: https://osv.dev/vulnerability/CVE-2020-15833

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-15833/
Summaries are generated and may contain mistakes; the official description above is the record.