# CVE-2022-27644: Security feature bypass in R6700v3

> Attackers can bypass HTTPS certificate validation to compromise downloaded data integrity and potentially execute arbitrary code on NETGEAR routers.

- **Severity:** Medium 5.0 (`CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **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-rvc6-cvq7-4g2q

## What is CVE-2022-27644?

CVE-2022-27644 is a medium-severity 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 compromise the integrity of downloaded information on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-15797.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2022-27644?

It affects 24 products.


Products: Netgear Cbr40 Firmware, Netgear Lbr1020 Firmware, Netgear Lbr20 Firmware, Netgear R6400 Firmware, Netgear R6700 Firmware, Netgear R6900p Firmware, Netgear R7000 Firmware, Netgear R7000p Firmware, Netgear R7850 Firmware, Netgear R7960p Firmware, Netgear R8000 Firmware, Netgear R8000p Firmware, Netgear Rax200 Firmware, Netgear Rax75 Firmware, Netgear Rax80 Firmware, Netgear Rbr10 Firmware, Netgear Rbr20 Firmware, Netgear Rbr40 Firmware, Netgear Rbr50 Firmware, Netgear Rbs10 Firmware and 4 more.

## How do I fix CVE-2022-27644?

No fix has been published for CVE-2022-27644 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-27644 being exploited?

There is no known exploitation of CVE-2022-27644 in the wild and no public exploit code.

## Other vulnerabilities in Netgear R6400 Firmware

- [CVE-2021-45630](https://insights.sbomify.com/CVE-2021-45630/): Command injection in n/a (critical 10.0)
- [CVE-2023-36187](https://insights.sbomify.com/CVE-2023-36187/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-45617](https://insights.sbomify.com/CVE-2021-45617/): Command injection in n/a (critical 9.8)
- [CVE-2021-45504](https://insights.sbomify.com/CVE-2021-45504/): Auth bypass in n/a (critical 9.6)
- [CVE-2021-45507](https://insights.sbomify.com/CVE-2021-45507/): Auth bypass in n/a (critical 9.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-27644 and fix it if it is affected.

What it is: CVE-2022-27644 is a medium-severity 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-2022-27644 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-2022-27644/ (Markdown: https://insights.sbomify.com/CVE-2022-27644/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-27644
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-27644
- OSV: https://osv.dev/vulnerability/CVE-2022-27644

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-27644/
Summaries are generated and may contain mistakes; the official description above is the record.