# CVE-2019-0126: Privilege escalation in Intel(R) Unified Extensible Firmware Interface (UEFI)

> Privileged local users can escalate privileges or cause denial of service in Intel Xeon processor firmware due to insufficient access control.

- **Severity:** Medium 6.7 (`CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:** 17 May 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-h2jx-mv2v-25c2

## What is CVE-2019-0126?

CVE-2019-0126 is a medium-severity vulnerability in Intel(R) Unified Extensible Firmware Interface (UEFI), published on 17 May 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Insufficient access control in silicon reference firmware for Intel(R) Xeon(R) Scalable Processor, Intel(R) Xeon(R) Processor D Family may allow a privileged user to potentially enable escalation of privilege and/or denial of service via local access.

## Which versions are affected by CVE-2019-0126?

It affects 48 products.


Products: Intel Xeon Bronze Processors Firmware, Intel Xeon D-1513n Firmware, Intel Xeon D-1518 Firmware, Intel Xeon D-1520 Firmware, Intel Xeon D-1521 Firmware, Intel Xeon D-1523n Firmware, Intel Xeon D-1527 Firmware, Intel Xeon D-1528 Firmware, Intel Xeon D-1529 Firmware, Intel Xeon D-1531 Firmware, Intel Xeon D-1533n Firmware, Intel Xeon D-1537 Firmware, Intel Xeon D-1539 Firmware, Intel Xeon D-1540 Firmware, Intel Xeon D-1541 Firmware, Intel Xeon D-1543n Firmware, Intel Xeon D-1548 Firmware, Intel Xeon D-1553n Firmware, Intel Xeon D-1557 Firmware, Intel Xeon D-1559 Firmware and 28 more.

## How do I fix CVE-2019-0126?

No fix has been published for CVE-2019-0126 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-0126 being exploited?

There is no known exploitation of CVE-2019-0126 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-0126 and fix it if it is affected.

What it is: CVE-2019-0126 is a medium-severity vulnerability in Intel(R) Unified Extensible Firmware Interface (UEFI), published on 17 May 2019. 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-2019-0126 in the wild and no public exploit code.

Affected product: Intel(R) Unified Extensible Firmware Interface (UEFI). 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-2019-0126/ (Markdown: https://insights.sbomify.com/CVE-2019-0126/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-0126
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-0126
- OSV: https://osv.dev/vulnerability/CVE-2019-0126

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-0126/
Summaries are generated and may contain mistakes; the official description above is the record.