# CVE-2020-29491: Misconfiguration in Wyse Proprietary OS (ThinOS)

> Remote attackers can access sensitive network information due to insecure default settings in Dell Wyse ThinOS, compromising thin clients.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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:** 4 Jan 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-xw74-fx28-hrj8

## What is CVE-2020-29491?

CVE-2020-29491 is a critical vulnerability in Dell Wyse Proprietary OS (ThinOS), published on 4 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability to gain access to the sensitive information on the local network, leading to the potential compromise of impacted thin clients.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2020-29491?

It affects 1 product.


Products: Dell Wyse Thinos.

## How do I fix CVE-2020-29491?

No fix has been published for CVE-2020-29491 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29491 being exploited?

There is no known exploitation of CVE-2020-29491 in the wild and no public exploit code.

## Other vulnerabilities in Dell Wyse Proprietary OS (ThinOS)

- [CVE-2020-29492](https://insights.sbomify.com/CVE-2020-29492/): Misconfiguration in Wyse Proprietary OS (ThinOS) (critical 10.0)
- [CVE-2024-42427](https://insights.sbomify.com/CVE-2024-42427/): Command injection in Wyse Proprietary OS (Modern ThinOS) (high 7.6)
- [CVE-2021-21597](https://insights.sbomify.com/CVE-2021-21597/): Information disclosure in Wyse ThinOS (high 7.2)
- [CVE-2022-34402](https://insights.sbomify.com/CVE-2022-34402/): Denial of service in Wyse Proprietary OS (Modern ThinOS) (medium 6.8)
- [CVE-2023-32446](https://insights.sbomify.com/CVE-2023-32446/): Information disclosure in Wyse Proprietary OS (Modern ThinOS) (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29491 and fix it if it is affected.

What it is: CVE-2020-29491 is a critical vulnerability in Dell Wyse Proprietary OS (ThinOS), published on 4 Jan 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-2020-29491 in the wild and no public exploit code.

Affected product: Dell Wyse Proprietary OS (ThinOS). 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-2020-29491/ (Markdown: https://insights.sbomify.com/CVE-2020-29491/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29491
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29491
- OSV: https://osv.dev/vulnerability/CVE-2020-29491

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29491/
Summaries are generated and may contain mistakes; the official description above is the record.