# CVE-2021-0157: Privilege escalation in Intel(R) Processors

> A privileged local attacker can exploit insufficient control flow management in Intel BIOS firmware to escalate privileges.

- **Severity:** Medium 6.7 (`CVSS:3.1/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 Nov 2021
- **Updated:** 7 Oct 2026
- **Also known as:** GHSA-64pf-m95p-gcg5

## What is CVE-2021-0157?

CVE-2021-0157 is a medium-severity vulnerability in Intel(R) Processors, published on 17 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Insufficient control flow management in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Weakness: CWE-691 (Insufficient Control Flow Management)

## Which versions are affected by CVE-2021-0157?

It affects 484 products.


Products: Intel Celeron N2805, Intel Celeron N2806, Intel Celeron N2807, Intel Celeron N2808, Intel Celeron N2810, Intel Celeron N2815, Intel Celeron N2820, Intel Celeron N2830, Intel Celeron N2840, Intel Celeron N2910, Intel Celeron N2920, Intel Celeron N2930, Intel Celeron N2940, Intel Celeron N3000, Intel Celeron N3010, Intel Celeron N3050, Intel Celeron N3060, Intel Celeron N3150, Intel Celeron N3160, Intel Celeron N3350 and 464 more.

## How do I fix CVE-2021-0157?

No fix has been published for CVE-2021-0157 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-0157 being exploited?

There is no known exploitation of CVE-2021-0157 in the wild and no public exploit code.

## Other vulnerabilities in Intel(R) Processors

- [CVE-2021-0158](https://insights.sbomify.com/CVE-2021-0158/): Privilege escalation in Intel(R) Processors (medium 6.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-0157 and fix it if it is affected.

What it is: CVE-2021-0157 is a medium-severity vulnerability in Intel(R) Processors, published on 17 Nov 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-2021-0157 in the wild and no public exploit code.

Affected product: Intel(R) Processors. 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-2021-0157/ (Markdown: https://insights.sbomify.com/CVE-2021-0157/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-0157
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-0157
- OSV: https://osv.dev/vulnerability/CVE-2021-0157

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-0157/
Summaries are generated and may contain mistakes; the official description above is the record.