# CVE-2020-8171: Command injection in AirMax AirOS for TI, XW and XM boards

> Attackers can execute arbitrary commands on AirMax AirOS devices via crafted input to vulnerable endpoints, requiring a firmware upgrade.

- **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:** 26 May 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-x5pj-xg2p-hp28

## What is CVE-2020-8171?

CVE-2020-8171 is a critical command injection vulnerability in AirMax AirOS for TI, XW and XM boards, published on 26 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

We have recently released new version of AirMax AirOS firmware v6.3.0 for TI, XW and XM boards that fixes vulnerabilities found on AirMax AirOS v6.2.0 and prior TI, XW and XM boards, according to the description below:There are certain end-points containing functionalities that are vulnerable to command injection. It is possible to craft an input string that passes the filter check but still contains commands, resulting in remote code execution.Mitigation:Update to the latest AirMax AirOS firmware version available at the AirMax download page.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2020-8171?

It affects 1 product.


Products: Ui Airos.

## How do I fix CVE-2020-8171?

No fix has been published for CVE-2020-8171 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8171 being exploited?

There is no known exploitation of CVE-2020-8171 in the wild and no public exploit code.

## Other vulnerabilities in AirMax AirOS for TI, XW and XM boards

- [CVE-2010-5330](https://insights.sbomify.com/CVE-2010-5330/): Ubiquiti AirOS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2020-8168](https://insights.sbomify.com/CVE-2020-8168/): Cross-site request forgery in AirMax AirOS for TI, XW and XM boards (high 8.8)
- [CVE-2017-0938](https://insights.sbomify.com/CVE-2017-0938/): Denial of service in airMAX, EdgeMAX (high 7.5)
- [CVE-2020-8170](https://insights.sbomify.com/CVE-2020-8170/): Cross-site scripting in AirMax AirOS for TI, XW and XM boards (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8171 and fix it if it is affected.

What it is: CVE-2020-8171 is a critical command injection vulnerability in AirMax AirOS for TI, XW and XM boards, published on 26 May 2020. 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-2020-8171 in the wild and no public exploit code.

Affected product: AirMax AirOS for TI, XW and XM boards. 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-2020-8171/ (Markdown: https://insights.sbomify.com/CVE-2020-8171/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8171
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8171
- OSV: https://osv.dev/vulnerability/CVE-2020-8171

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-8171/
Summaries are generated and may contain mistakes; the official description above is the record.