# CVE-2021-27193: Missing authorization in n/a

> Remote unauthenticated attackers can read and write files with system privileges due to incorrect default API permissions, leading to privilege escalation.

- **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:** 25 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-v6wh-2fwr-fx2r

## What is CVE-2021-27193?

CVE-2021-27193 is a critical missing authorization vulnerability in n/a, published on 25 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Incorrect default permissions vulnerability in the API of Netop Vision Pro up to and including 9.7.1 allows a remote unauthenticated attacker to read and write files on the remote machine with system privileges resulting in a privilege escalation.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2021-27193?

It affects 1 product.


Products: Netop Vision Pro.

## How do I fix CVE-2021-27193?

No fix has been published for CVE-2021-27193 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-27193 being exploited?

There is no known exploitation of CVE-2021-27193 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-27194](https://insights.sbomify.com/CVE-2021-27194/): Information disclosure in n/a (high 8.8)
- [CVE-2021-27192](https://insights.sbomify.com/CVE-2021-27192/): Privilege escalation in n/a (high 7.8)
- [CVE-2021-36134](https://insights.sbomify.com/CVE-2021-36134/): Out of bounds write in Netop Vision Pro (high 7.4)
- [CVE-2021-27195](https://insights.sbomify.com/CVE-2021-27195/): Missing authorization in n/a (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27193 and fix it if it is affected.

What it is: CVE-2021-27193 is a critical missing authorization vulnerability in n/a, published on 25 Mar 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-2021-27193 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-2021-27193/ (Markdown: https://insights.sbomify.com/CVE-2021-27193/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27193
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27193
- OSV: https://osv.dev/vulnerability/CVE-2021-27193

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-27193/
Summaries are generated and may contain mistakes; the official description above is the record.