# CVE-2021-0009: Denial of service in Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters

> An unauthenticated attacker with adjacent access can cause a denial of service via an out-of-bounds read in Intel Ethernet Adapter firmware.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **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:** 11 Aug 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-qf6f-9fq8-x522

## What is CVE-2021-0009?

CVE-2021-0009 is a medium-severity denial of service vulnerability in Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters, published on 11 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Out-of-bounds read in the firmware for Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters before version 1.5.3.0 may allow an unauthenticated user to potentially enable denial of service via adjacent access.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2021-0009?

It affects 1 product.


Products: Intel Ethernet Controller E810 Firmware.

## How do I fix CVE-2021-0009?

No fix has been published for CVE-2021-0009 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-0009 being exploited?

There is no known exploitation of CVE-2021-0009 in the wild and no public exploit code.

## Other vulnerabilities in Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters

- [CVE-2021-0084](https://insights.sbomify.com/CVE-2021-0084/): Privilege escalation in Intel(R) Ethernet Controllers X722 and 800 series Linux RMDA driver (high 7.8)
- [CVE-2021-0003](https://insights.sbomify.com/CVE-2021-0003/): Information disclosure in Intel(R) Ethernet Controllers 800 series Linux drivers (medium 5.5)
- [CVE-2021-33128](https://insights.sbomify.com/CVE-2021-33128/): Denial of service in Intel(R) E810 Ethernet Controllers (medium 4.4)
- [CVE-2022-28709](https://insights.sbomify.com/CVE-2022-28709/): Denial of service in Intel(R) E810 Ethernet Controllers (medium 4.4)
- [CVE-2021-0005](https://insights.sbomify.com/CVE-2021-0005/): Denial of service in Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters (medium 4.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-0009 and fix it if it is affected.

What it is: CVE-2021-0009 is a medium-severity denial of service vulnerability in Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters, published on 11 Aug 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-2021-0009 in the wild and no public exploit code.

Affected product: Intel(R) Ethernet Adapters 800 Series Controllers and associated adapters. 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-2021-0009/ (Markdown: https://insights.sbomify.com/CVE-2021-0009/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-0009
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-0009
- OSV: https://osv.dev/vulnerability/CVE-2021-0009

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-0009/
Summaries are generated and may contain mistakes; the official description above is the record.