# CVE-2022-27645: Auth bypass in R6700v3

> Network-adjacent attackers can bypass authentication on NETGEAR R6700v3 routers to execute arbitrary code with root privileges.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/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:** 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-jv3h-vgc4-3286

## What is CVE-2022-27645?

CVE-2022-27645 is a high-severity authentication bypass 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 bypass authentication on affected installations of NETGEAR R6700v3 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within readycloud_control.cgi. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15762.

Weakness: CWE-697 (Incorrect Comparison), CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2022-27645?

It affects 23 products.


Products: Netgear Lax20 Firmware, Netgear R6400 Firmware, Netgear R6700 Firmware, Netgear R7000 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, Netgear Rax20 Firmware, Netgear Rax35 Firmware, Netgear Rax38 Firmware, Netgear Rax40 Firmware, Netgear Rax42 Firmware, Netgear Rax43 Firmware, Netgear Rax45 Firmware, Netgear Rax48 Firmware and 3 more.

## How do I fix CVE-2022-27645?

No fix has been published for CVE-2022-27645 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-27645 being exploited?

There is no known exploitation of CVE-2022-27645 in the wild and no public exploit code.

## Other vulnerabilities in Netgear R6400 Firmware

- [CVE-2021-45549](https://insights.sbomify.com/CVE-2021-45549/): Command injection in n/a (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-27645 and fix it if it is affected.

What it is: CVE-2022-27645 is a high-severity authentication bypass 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-2022-27645 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-2022-27645/ (Markdown: https://insights.sbomify.com/CVE-2022-27645/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-27645
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-27645
- OSV: https://osv.dev/vulnerability/CVE-2022-27645

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-27645/
Summaries are generated and may contain mistakes; the official description above is the record.