# CVE-2021-22648: Ovarro TBox Incorrect Permission Assignment for Critical Resource

> Attackers can read, alter, or delete configuration files in Ovarro TBox due to incorrect permission assignments on Modbus file access functions.

- **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:** 28 Jul 2022
- **Updated:** 17 Apr 2025
- **Also known as:** GHSA-j5x9-r222-8r2p

## What is CVE-2021-22648?

CVE-2021-22648 is a high-severity missing authorization vulnerability in Ovarro TBox, published on 28 Jul 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Ovarro TBox proprietary Modbus file access functions allow attackers to read, alter, or delete the configuration file.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2021-22648?

It affects 8 products.


Products: Ovarro Tbox Lt2-530 Firmware, Ovarro Tbox Lt2-532 Firmware, Ovarro Tbox Lt2-540 Firmware, Ovarro Tbox Ms-Cpu32-S2 Firmware, Ovarro Tbox Ms-Cpu32 Firmware, Ovarro Tbox Rm2 Firmware, Ovarro Tbox Tg2 Firmware, Ovarro Twinsoft.

## How do I fix CVE-2021-22648?

No fix has been published for CVE-2021-22648 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22648 being exploited?

There is no known exploitation of CVE-2021-22648 in the wild and no public exploit code.

## Other vulnerabilities in Ovarro TBox

- [CVE-2021-22646](https://insights.sbomify.com/CVE-2021-22646/): Ovarro TBox Code Injection (high 8.8)
- [CVE-2021-22640](https://insights.sbomify.com/CVE-2021-22640/): Ovarro TBox Insufficiently Protected Credentials (high 7.5)
- [CVE-2021-22642](https://insights.sbomify.com/CVE-2021-22642/): Ovarro TBox Uncontrolled Resource Consumption (high 7.5)
- [CVE-2021-22644](https://insights.sbomify.com/CVE-2021-22644/): Ovarro TBox Use of Hard-coded Cryptographic Key (high 7.5)
- [CVE-2021-22650](https://insights.sbomify.com/CVE-2021-22650/): Ovarro TBox Relative Path Traversal (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22648 and fix it if it is affected.

What it is: CVE-2021-22648 is a high-severity missing authorization vulnerability in Ovarro TBox, published on 28 Jul 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22648 in the wild and no public exploit code.

Affected product: Ovarro TBox. 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-2021-22648/ (Markdown: https://insights.sbomify.com/CVE-2021-22648/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22648
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22648
- OSV: https://osv.dev/vulnerability/CVE-2021-22648

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22648/
Summaries are generated and may contain mistakes; the official description above is the record.