# CVE-2021-43162: Command injection in n/a

> Attackers can execute arbitrary code on Ruijie RG-EW Series Routers via a command injection vulnerability in the diagnose API.

- **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:** 4 May 2022
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-4hvq-rh66-phrx

## What is CVE-2021-43162?

CVE-2021-43162 is a high-severity command injection vulnerability in n/a, published on 4 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A Remote Code Execution (RCE) vulnerability exists in Ruijie Networks Ruijie RG-EW Series Routers up to ReyeeOS 1.55.1915 / EW_3.0(1)B11P55 via the runPackDiagnose function in /cgi-bin/luci/api/diagnose.

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

## Which versions are affected by CVE-2021-43162?

It affects 1 product.


Products: Ruijienetworks Reyeeos.

## How do I fix CVE-2021-43162?

No fix has been published for CVE-2021-43162 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-43162 being exploited?

There is no known exploitation of CVE-2021-43162 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-43163](https://insights.sbomify.com/CVE-2021-43163/): Command injection in n/a (critical 9.8)
- [CVE-2021-43159](https://insights.sbomify.com/CVE-2021-43159/): Command injection in n/a (high 8.8)
- [CVE-2021-43160](https://insights.sbomify.com/CVE-2021-43160/): Command injection in n/a (high 8.8)
- [CVE-2021-43161](https://insights.sbomify.com/CVE-2021-43161/): Command injection in n/a (high 8.8)
- [CVE-2021-43164](https://insights.sbomify.com/CVE-2021-43164/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-43162 and fix it if it is affected.

What it is: CVE-2021-43162 is a high-severity command injection vulnerability in n/a, published on 4 May 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-2021-43162 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-2021-43162/ (Markdown: https://insights.sbomify.com/CVE-2021-43162/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-43162
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-43162
- OSV: https://osv.dev/vulnerability/CVE-2021-43162

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-43162/
Summaries are generated and may contain mistakes; the official description above is the record.