# CVE-2021-45615: Command injection in n/a

> Unauthenticated attackers can execute arbitrary commands on vulnerable NETGEAR routers and mesh systems via command injection.

- **Severity:** Critical 9.6 (`CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:C/UI:N`)
- **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:** 26 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6jhr-4rfq-6g56

## What is CVE-2021-45615?

CVE-2021-45615 is a critical command injection vulnerability in Netgear R7900p 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 unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000P before 1.4.2.84, R8300 before 1.0.2.154, R8500 before 1.0.2.154, RBK752 before 3.2.17.12, RBR750 before 3.2.17.12, RBS750 before 3.2.17.12, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

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

## Which versions are affected by CVE-2021-45615?

It affects 13 products.


Products: Netgear Cbr40 Firmware, Netgear Cbr750 Firmware, Netgear R7900p Firmware, Netgear R7960p Firmware, Netgear R8000p Firmware, Netgear R8300 Firmware, Netgear R8500 Firmware, Netgear Rbk752 Firmware, Netgear Rbk852 Firmware, Netgear Rbr750 Firmware, Netgear Rbr850 Firmware, Netgear Rbs750 Firmware, Netgear Rbs850 Firmware.

## How do I fix CVE-2021-45615?

No fix has been published for CVE-2021-45615 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-45615 being exploited?

There is no known exploitation of CVE-2021-45615 in the wild and no public exploit code.

## Other vulnerabilities in Netgear R7900p 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-2021-45615 and fix it if it is affected.

What it is: CVE-2021-45615 is a critical command injection vulnerability in Netgear R7900p 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-2021-45615 in the wild and no public exploit code.

Affected product: Netgear R7900p 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-2021-45615/ (Markdown: https://insights.sbomify.com/CVE-2021-45615/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45615
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45615
- OSV: https://osv.dev/vulnerability/CVE-2021-45615

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-45615/
Summaries are generated and may contain mistakes; the official description above is the record.