# CVE-2019-14556: Denial of service in Intel BIOS

> A privileged local user can cause a denial of service in Intel BIOS firmware due to improper initialization.

- **Severity:** Medium 4.4 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H`)
- **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:** 5 Oct 2020
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-342r-wqp5-r3jj

## What is CVE-2019-14556?

CVE-2019-14556 is a medium-severity denial of service vulnerability in Intel BIOS, published on 5 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper initialization in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow a privileged user to potentially enable denial of service via local access.

Weakness: CWE-665 (Improper Initialization)

## Which versions are affected by CVE-2019-14556?

It affects 1 product.


Products: Intel Bios.

## How do I fix CVE-2019-14556?

No fix has been published for CVE-2019-14556 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-14556 being exploited?

There is no known exploitation of CVE-2019-14556 in the wild and no public exploit code.

## Other vulnerabilities in Intel BIOS

- [CVE-2019-14557](https://insights.sbomify.com/CVE-2019-14557/): Memory corruption in Intel BIOS (high 8.0)
- [CVE-2020-12360](https://insights.sbomify.com/CVE-2020-12360/): Memory corruption in Intel(R) Processors (high 7.8)
- [CVE-2020-8672](https://insights.sbomify.com/CVE-2020-8672/): Memory corruption in Intel BIOS Advisory (high 7.8)
- [CVE-2020-8739](https://insights.sbomify.com/CVE-2020-8739/): Privilege escalation in Intel BIOS platform sample code for some Intel(R) Processors (high 7.8)
- [CVE-2008-7096](https://insights.sbomify.com/CVE-2008-7096/): Privilege escalation in n/a (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-14556 and fix it if it is affected.

What it is: CVE-2019-14556 is a medium-severity denial of service vulnerability in Intel BIOS, published on 5 Oct 2020. 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-2019-14556 in the wild and no public exploit code.

Affected product: Intel BIOS. 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-2019-14556/ (Markdown: https://insights.sbomify.com/CVE-2019-14556/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-14556
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-14556
- OSV: https://osv.dev/vulnerability/CVE-2019-14556

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-14556/
Summaries are generated and may contain mistakes; the official description above is the record.