# CVE-2022-46423: File upload in n/a

> Attackers can modify firmware images via MITM to bypass checks, enabling arbitrary code execution or denial of service on Netgear routers.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/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:** 20 Dec 2022
- **Updated:** 17 Apr 2025
- **Also known as:** GHSA-6662-6w2g-g564

## What is CVE-2022-46423?

CVE-2022-46423 is a high-severity vulnerability in Netgear Wnr2000 Firmware, published on 20 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An exploitable firmware modification vulnerability was discovered on the Netgear WNR2000v1 router. An attacker can conduct a MITM (Man-in-the-Middle) attack to modify the user-uploaded firmware image and bypass the CRC check, allowing attackers to execute arbitrary code or cause a Denial of Service (DoS). This affects v1.2.3.7 and earlier.

Weakness: CWE-494 (Download of Code Without Integrity Check)

## Which versions are affected by CVE-2022-46423?

It affects 1 product.


Products: Netgear Wnr2000 Firmware.

## How do I fix CVE-2022-46423?

No fix has been published for CVE-2022-46423 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-46423 being exploited?

There is no known exploitation of CVE-2022-46423 in the wild and no public exploit code.

## Other vulnerabilities in Netgear Wnr2000 Firmware

- [CVE-2017-6862](https://insights.sbomify.com/CVE-2017-6862/): NETGEAR Multiple Devices Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2023-50089](https://insights.sbomify.com/CVE-2023-50089/): Command injection in n/a (critical 9.8)
- [CVE-2019-5054](https://insights.sbomify.com/CVE-2019-5054/): Null dereference in N300 WNR2000v5 (high 7.5)
- [CVE-2019-5055](https://insights.sbomify.com/CVE-2019-5055/): Null dereference in N300 WNR2000v5 (high 7.5)
- [CVE-2022-46422](https://insights.sbomify.com/CVE-2022-46422/): Denial of service in n/a (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-46423 and fix it if it is affected.

What it is: CVE-2022-46423 is a high-severity vulnerability in Netgear Wnr2000 Firmware, published on 20 Dec 2022. 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-2022-46423 in the wild and no public exploit code.

Affected product: Netgear Wnr2000 Firmware. 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-2022-46423/ (Markdown: https://insights.sbomify.com/CVE-2022-46423/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-46423
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-46423
- OSV: https://osv.dev/vulnerability/CVE-2022-46423

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-46423/
Summaries are generated and may contain mistakes; the official description above is the record.