# CVE-2020-29375: Hardcoded credentials in n/a

> A low-privileged attacker can use a hardcoded password to create an admin user on V-SOL OLT devices, leading to full administrative control.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Nov 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hg33-63vh-hrfx

## What is CVE-2020-29375?

CVE-2020-29375 is a high-severity vulnerability in n/a, published on 29 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An issue was discovered on V-SOL V1600D V2.03.69 and V2.03.57, V1600D4L V1.01.49, V1600D-MINI V1.01.48, V1600G1 V2.0.7 and V1.9.7, and V1600G2 V1.1.4 OLT devices. An low-privileged (non-admin) attacker can use a hardcoded password (4ef9cea10b2362f15ba4558b1d5c081f) to create an admin user.

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

## Which versions are affected by CVE-2020-29375?

It affects 5 products.


Products: Vsolcn V1600d-Mini Firmware, Vsolcn V1600d4l Firmware, Vsolcn V1600d Firmware, Vsolcn V1600g1 Firmware, Vsolcn V1600g2 Firmware.

## How do I fix CVE-2020-29375?

No fix has been published for CVE-2020-29375 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29375 being exploited?

There is no known exploitation of CVE-2020-29375 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-29376](https://insights.sbomify.com/CVE-2020-29376/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2020-29381](https://insights.sbomify.com/CVE-2020-29381/): Command injection in n/a (critical 9.8)
- [CVE-2020-29378](https://insights.sbomify.com/CVE-2020-29378/): Hardcoded credentials in n/a (high 8.8)
- [CVE-2020-29383](https://insights.sbomify.com/CVE-2020-29383/): Hardcoded credentials in n/a (high 7.8)
- [CVE-2020-29380](https://insights.sbomify.com/CVE-2020-29380/): Weak cryptography in n/a (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29375 and fix it if it is affected.

What it is: CVE-2020-29375 is a high-severity vulnerability in n/a, published on 29 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-29375 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-2020-29375/ (Markdown: https://insights.sbomify.com/CVE-2020-29375/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29375
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29375
- OSV: https://osv.dev/vulnerability/CVE-2020-29375

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29375/
Summaries are generated and may contain mistakes; the official description above is the record.