# CVE-2020-26927: Auth bypass in n/a

> Attackers can bypass authentication on various NETGEAR routers to gain unauthorized access to the device interface.

- **Severity:** Critical 9.4 (`CVSS:3.1/AC:L/AV:N/A:H/C:H/I:L/PR:N/S:U/UI:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-242m-6j37-xqc6

## What is CVE-2020-26927?

CVE-2020-26927 is a critical authentication bypass vulnerability in Netgear D6200 Firmware, published on 9 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Certain NETGEAR devices are affected by authentication bypass. This affects D6200 before 1.1.00.40, D7000 before 1.0.1.78, R6020 before 1.0.0.42, R6080 before 1.0.0.42, R6050 before 1.0.1.26, JR6150 before 1.0.1.26, R6120 before 1.0.0.66, R6220 before 1.1.0.100, R6260 before 1.1.0.66, R6700v2 before 1.2.0.62, R6800 before 1.2.0.62, R6900v2 before 1.2.0.62, AC2100 before 1.2.0.62, AC2400 before 1.2.0.62, AC2600 before 1.2.0.62, R7450 before 1.2.0.62, and WNR2020 before 1.1.0.62.

## Which versions are affected by CVE-2020-26927?

It affects 17 products.


Products: Netgear Ac2100 Firmware, Netgear Ac2400 Firmware, Netgear Ac2600 Firmware, Netgear D6200 Firmware, Netgear D7000 Firmware, Netgear Jr6150 Firmware, Netgear R6020 Firmware, Netgear R6050 Firmware, Netgear R6080 Firmware, Netgear R6120 Firmware, Netgear R6220 Firmware, Netgear R6260 Firmware, Netgear R6700 Firmware, Netgear R6800 Firmware, Netgear R6900 Firmware, Netgear R7450 Firmware, Netgear Wnr2020 Firmware.

## How do I fix CVE-2020-26927?

No fix has been published for CVE-2020-26927 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-26927 being exploited?

There is no known exploitation of CVE-2020-26927 in the wild and no public exploit code.

## Other vulnerabilities in Netgear D6200 Firmware

- [CVE-2021-38516](https://insights.sbomify.com/CVE-2021-38516/): Missing authorization in n/a (critical 10.0)
- [CVE-2021-29068](https://insights.sbomify.com/CVE-2021-29068/): Memory corruption in n/a (critical 9.9)
- [CVE-2020-35795](https://insights.sbomify.com/CVE-2020-35795/): Memory corruption in n/a (critical 9.8)
- [CVE-2020-35800](https://insights.sbomify.com/CVE-2020-35800/): Misconfiguration in n/a (critical 9.4)
- [CVE-2021-34865](https://insights.sbomify.com/CVE-2021-34865/): Auth bypass in Multiple Routers (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-26927 and fix it if it is affected.

What it is: CVE-2020-26927 is a critical authentication bypass vulnerability in Netgear D6200 Firmware, published on 9 Oct 2020. 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-2020-26927 in the wild and no public exploit code.

Affected product: Netgear D6200 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-2020-26927/ (Markdown: https://insights.sbomify.com/CVE-2020-26927/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-26927
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-26927
- OSV: https://osv.dev/vulnerability/CVE-2020-26927

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-26927/
Summaries are generated and may contain mistakes; the official description above is the record.