# CVE-2022-21809: File upload in InRouter302

> An attacker can upload malicious files via the httpd upload.cgi interface on InHand Networks InRouter302 devices, potentially leading to arbitrary code execution.

- **Severity:** Critical 9.9 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/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:** 12 May 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-399c-25pm-72mj

## What is CVE-2022-21809?

CVE-2022-21809 is a critical vulnerability in InHand Networks InRouter302, published on 12 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A file write vulnerability exists in the httpd upload.cgi functionality of InHand Networks InRouter302 V3.5.4. A specially-crafted HTTP request can lead to arbitrary file upload. An attacker can upload a malicious file to trigger this vulnerability.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-377 (DEPRECATED: Insecure Temporary File)

## Which versions are affected by CVE-2022-21809?

It affects 1 product.


Products: Inhandnetworks Inrouter302 Firmware.

## How do I fix CVE-2022-21809?

No fix has been published for CVE-2022-21809 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-21809 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-21809 exists.

## Other vulnerabilities in InHand Networks InRouter302

- [CVE-2023-22600](https://insights.sbomify.com/CVE-2023-22600/): Missing authorization in InRouter 302 (critical 10.0)
- [CVE-2023-22601](https://insights.sbomify.com/CVE-2023-22601/): Information disclosure in InRouter 302 (critical 10.0)
- [CVE-2022-25932](https://insights.sbomify.com/CVE-2022-25932/): Privilege escalation in InRouter302 (high 7.4)
- [CVE-2022-21182](https://insights.sbomify.com/CVE-2022-21182/): Privilege escalation in InRouter302 (high 7.4)
- [CVE-2023-22598](https://insights.sbomify.com/CVE-2023-22598/): Command injection in InRouter 302 (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-21809 and fix it if it is affected.

What it is: CVE-2022-21809 is a critical vulnerability in InHand Networks InRouter302, published on 12 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-21809 exists.

Affected product: InHand Networks InRouter302. 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-2022-21809/ (Markdown: https://insights.sbomify.com/CVE-2022-21809/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21809
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21809
- OSV: https://osv.dev/vulnerability/CVE-2022-21809

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-21809/
Summaries are generated and may contain mistakes; the official description above is the record.