# CVE-2021-45595: Command injection in n/a

> An authenticated attacker can execute arbitrary commands on NETGEAR mesh routers via a command injection vulnerability.

- **Severity:** High 7.6 (`CVSS:3.1/AC:H/AV:A/A:H/C:H/I:H/PR:H/S:C/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-r5jx-cqpf-rwcx

## What is CVE-2021-45595?

CVE-2021-45595 is a high-severity command injection vulnerability in Netgear Rbk20 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 command injection by an authenticated user. This affects LBR20 before 2.6.3.50, RBS50Y before 2.7.3.22, RBR10 before 2.7.3.22, RBR20 before 2.7.3.22, RBR40 before 2.7.3.22, RBR50 before 2.7.3.22, RBS10 before 2.7.3.22, RBS20 before 2.7.3.22, RBS40 before 2.7.3.22, RBS50 before 2.7.3.22, RBK12 before 2.7.3.22, RBK20 before 2.7.3.22, RBK40 before 2.7.3.22, and RBK50 before 2.7.3.22.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2021-45595?

It affects 14 products.


Products: Netgear Lbr20 Firmware, Netgear Rbk12 Firmware, Netgear Rbk20 Firmware, Netgear Rbk40 Firmware, Netgear Rbk50 Firmware, Netgear Rbr10 Firmware, Netgear Rbr20 Firmware, Netgear Rbr40 Firmware, Netgear Rbr50 Firmware, Netgear Rbs10 Firmware, Netgear Rbs20 Firmware, Netgear Rbs40 Firmware, Netgear Rbs50 Firmware, Netgear Rbs50y Firmware.

## How do I fix CVE-2021-45595?

No fix has been published for CVE-2021-45595 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45595 being exploited?

There is no known exploitation of CVE-2021-45595 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-45595 and fix it if it is affected.

What it is: CVE-2021-45595 is a high-severity command injection vulnerability in Netgear Rbk20 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: There is no known exploitation of CVE-2021-45595 in the wild and no public exploit code.

Affected product: Netgear Rbk20 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-2021-45595/ (Markdown: https://insights.sbomify.com/CVE-2021-45595/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45595
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45595
- OSV: https://osv.dev/vulnerability/CVE-2021-45595

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-45595/
Summaries are generated and may contain mistakes; the official description above is the record.