# CVE-2021-33141: Denial of service in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware

> Unauthenticated attackers can cause denial of service in Intel Ethernet adapters and I225 controllers via improper input validation.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 May 2024
- **Updated:** 3 Aug 2024

## What is CVE-2021-33141?

CVE-2021-33141 is a high-severity denial of service vulnerability in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware, published on 16 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper input validation in some Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware may allow an unauthenticated user to potentially enable denial of service via network access.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-33141?

It affects 4 products.


Products: Intel Ethernet Adapter Complete Driver, Intel Ethernet Controller I225-It Firmware, Intel Ethernet Controller I225-Lm Firmware, Intel Ethernet Controller I225-v Firmware.

## How do I fix CVE-2021-33141?

No fix has been published for CVE-2021-33141 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-33141 being exploited?

There is no known exploitation of CVE-2021-33141 in the wild and no public exploit code.

## Other vulnerabilities in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware

- [CVE-2021-33162](https://insights.sbomify.com/CVE-2021-33162/): Privilege escalation in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware (high 8.4)
- [CVE-2021-33145](https://insights.sbomify.com/CVE-2021-33145/): Privilege escalation in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware (high 7.2)
- [CVE-2021-33157](https://insights.sbomify.com/CVE-2021-33157/): Privilege escalation in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware (high 7.2)
- [CVE-2021-33158](https://insights.sbomify.com/CVE-2021-33158/): Privilege escalation in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware (high 7.2)
- [CVE-2021-33161](https://insights.sbomify.com/CVE-2021-33161/): Privilege escalation in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-33141 and fix it if it is affected.

What it is: CVE-2021-33141 is a high-severity denial of service vulnerability in Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability firmware, published on 16 May 2024. 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-2021-33141 in the wild and no public exploit code.

Affected product: Intel(R) Ethernet Adapters and Intel(R) Ethernet Controller I225 Manageability 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-2021-33141/ (Markdown: https://insights.sbomify.com/CVE-2021-33141/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-33141
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-33141
- OSV: https://osv.dev/vulnerability/CVE-2021-33141

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-33141/
Summaries are generated and may contain mistakes; the official description above is the record.