# CVE-2021-45511: Auth bypass in n/a

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

- **Severity:** Medium 6.8 (`CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-wr8v-6jgr-244v

## What is CVE-2021-45511?

CVE-2021-45511 is a medium-severity authentication bypass vulnerability in Netgear D7000 Firmware, published on 26 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Certain NETGEAR devices are affected by authentication bypass. This affects AC2100 before 2021-08-27, AC2400 before 2021-08-27, AC2600 before 2021-08-27, D7000 before 2021-08-27, R6220 before 2021-08-27, R6230 before 2021-08-27, R6260 before 2021-08-27, R6330 before 2021-08-27, R6350 before 2021-08-27, R6700v2 before 2021-08-27, R6800 before 2021-08-27, R6850 before 2021-08-27, R6900v2 before 2021-08-27, R7200 before 2021-08-27, R7350 before 2021-08-27, R7400 before 2021-08-27, and R7450 before 2021-08-27.

## Which versions are affected by CVE-2021-45511?

It affects 17 products.


Products: Netgear Ac2100 Firmware, Netgear Ac2400 Firmware, Netgear Ac2600 Firmware, Netgear D7000 Firmware, Netgear R6220 Firmware, Netgear R6230 Firmware, Netgear R6260 Firmware, Netgear R6330 Firmware, Netgear R6350 Firmware, Netgear R6700v2 Firmware, Netgear R6800 Firmware, Netgear R6850 Firmware, Netgear R6900v2 Firmware, Netgear R7200 Firmware, Netgear R7350 Firmware, Netgear R7400 Firmware, Netgear R7450 Firmware.

## How do I fix CVE-2021-45511?

No fix has been published for CVE-2021-45511 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45511 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-45511 exists.

Public exploit code:

- Netgear PNPX_GetShareFolderList Authentication Bypass (metasploit)

## Other vulnerabilities in Netgear D7000 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-2020-26927](https://insights.sbomify.com/CVE-2020-26927/): Auth bypass in n/a (critical 9.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-45511 and fix it if it is affected.

What it is: CVE-2021-45511 is a medium-severity authentication bypass vulnerability in Netgear D7000 Firmware, published on 26 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-45511 exists.

Affected product: Netgear D7000 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-2021-45511/ (Markdown: https://insights.sbomify.com/CVE-2021-45511/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45511
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45511
- OSV: https://osv.dev/vulnerability/CVE-2021-45511

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-45511/
Summaries are generated and may contain mistakes; the official description above is the record.