# CVE-2021-45501: Auth bypass in n/a

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

- **Severity:** Critical 9.4 (`CVSS:3.1/AC:L/AV:N/A:L/C:H/I:H/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:** 26 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hwc2-6cgc-779p

## What is CVE-2021-45501?

CVE-2021-45501 is a critical authentication bypass vulnerability in Netgear D7000 Firmware, published on 26 Dec 2021. 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 AC2400 before 1.1.0.84, AC2600 before 1.1.0.84, D7000 before 1.0.1.82, R6020 before 1.0.0.52, R6080 before 1.0.0.52, R6120 before 1.0.0.80, R6220 before 1.1.0.110, R6230 before 1.1.0.110, R6260 before 1.1.0.84, R6330 before 1.1.0.84, R6350 before 1.1.0.84, R6700v2 before 1.1.0.84, R6800 before 1.1.0.84, R6850 before 1.1.0.84, R6900v2 before 1.1.0.84, R7200 before 1.1.0.84, R7350 before 1.1.0.84, R7400 before 1.1.0.84, and R7450 before 1.1.0.84.

## Which versions are affected by CVE-2021-45501?

It affects 19 products.


Products: Netgear Ac2400 Firmware, Netgear Ac2600 Firmware, Netgear D7000 Firmware, Netgear R6020 Firmware, Netgear R6080 Firmware, Netgear R6120 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-2021-45501?

No fix has been published for CVE-2021-45501 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45501 being exploited?

There is no known exploitation of CVE-2021-45501 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-45501 and fix it if it is affected.

What it is: CVE-2021-45501 is a critical authentication bypass vulnerability in Netgear D7000 Firmware, published on 26 Dec 2021. 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-2021-45501 in the wild and no public exploit code.

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-2021-45501/ (Markdown: https://insights.sbomify.com/CVE-2021-45501/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45501
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45501
- OSV: https://osv.dev/vulnerability/CVE-2021-45501

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-45501/
Summaries are generated and may contain mistakes; the official description above is the record.