# CVE-2022-27647: Command injection in R6700v3

> Network-adjacent attackers can execute arbitrary code as root on NETGEAR R6700v3 routers via improper input validation in libreadycloud.so.

- **Severity:** High 8.0 (`CVSS:3.0/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Mar 2023
- **Updated:** 18 Feb 2025
- **Also known as:** GHSA-7pr7-x6mw-h647

## What is CVE-2022-27647?

CVE-2022-27647 is a high-severity command injection vulnerability in Netgear R6400 Firmware, published on 29 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of the name or email field provided to libreadycloud.so. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15874.

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

## Which versions are affected by CVE-2022-27647?

It affects 33 products.


Products: Netgear Cax80 Firmware, Netgear Lax20 Firmware, Netgear Mr60 Firmware, Netgear Mr80 Firmware, Netgear Ms60 Firmware, Netgear Ms80 Firmware, Netgear R6400 Firmware, Netgear R6700 Firmware, Netgear R6900p Firmware, Netgear R7000 Firmware, Netgear R7000p Firmware, Netgear R7100lg Firmware, Netgear R7850 Firmware, Netgear R7900p Firmware, Netgear R7960p Firmware, Netgear R8000 Firmware, Netgear R8000p Firmware, Netgear R8500 Firmware, Netgear Rax15 Firmware, Netgear Rax200 Firmware and 13 more.

## How do I fix CVE-2022-27647?

No fix has been published for CVE-2022-27647 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-27647 being exploited?

There is no known exploitation of CVE-2022-27647 in the wild and no public exploit code.

## Other vulnerabilities in Netgear R6400 Firmware

- [CVE-2021-34991](https://insights.sbomify.com/CVE-2021-34991/): Memory corruption in R6400v2 (high 8.8)
- [CVE-2022-24655](https://insights.sbomify.com/CVE-2022-24655/): Memory corruption in n/a (high 7.8)
- [CVE-2022-27642](https://insights.sbomify.com/CVE-2022-27642/): Auth bypass in R6700v3 (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-27647 and fix it if it is affected.

What it is: CVE-2022-27647 is a high-severity command injection vulnerability in Netgear R6400 Firmware, published on 29 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-27647 in the wild and no public exploit code.

Affected product: Netgear R6400 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-2022-27647/ (Markdown: https://insights.sbomify.com/CVE-2022-27647/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-27647
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-27647
- OSV: https://osv.dev/vulnerability/CVE-2022-27647

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-27647/
Summaries are generated and may contain mistakes; the official description above is the record.