# CVE-2021-0186: Privilege escalation in Intel(R) SGX SDK applications compiled for SGX2 enabled processors

> A privileged local attacker can escalate privileges in Intel SGX SDK applications on SGX2 processors due to improper input validation.

- **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:** 3 Aug 2024
- **Also known as:** GHSA-5mqc-gjcv-wj5w

## What is CVE-2021-0186?

CVE-2021-0186 is a medium-severity vulnerability in Intel(R) SGX SDK applications compiled for SGX2 enabled 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

Improper input validation in the Intel(R) SGX SDK applications compiled for SGX2 enabled processors may allow a privileged user to potentially escalation of privilege via local access.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-0186?

It affects 183 products.


Products: Intel Celeron J1750 Firmware, Intel Celeron J1800 Firmware, Intel Celeron J1850 Firmware, Intel Celeron J1900 Firmware, Intel Celeron J3060 Firmware, Intel Celeron J3160 Firmware, Intel Celeron J3355 Firmware, Intel Celeron J3355e Firmware, Intel Celeron J3455 Firmware, Intel Celeron J3455e Firmware, Intel Celeron J4005 Firmware, Intel Celeron J4025 Firmware, Intel Celeron J4105 Firmware, Intel Celeron J4125 Firmware, Intel Celeron J6412 Firmware, Intel Celeron J6413 Firmware, Intel Celeron N2805 Firmware, Intel Celeron N2806 Firmware, Intel Celeron N2807 Firmware, Intel Celeron N2808 Firmware and 163 more.

## How do I fix CVE-2021-0186?

No fix has been published for CVE-2021-0186 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-0186 being exploited?

There is no known exploitation of CVE-2021-0186 in the wild and no public exploit code.

## Other vulnerabilities in Intel(R) SGX SDK applications compiled for SGX2 enabled processors

- [CVE-2022-38090](https://insights.sbomify.com/CVE-2022-38090/): Information disclosure in Intel(R) Processors with Intel(R) Software Guard Extensions (SGX) (medium 6.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-0186 and fix it if it is affected.

What it is: CVE-2021-0186 is a medium-severity vulnerability in Intel(R) SGX SDK applications compiled for SGX2 enabled 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-2021-0186 in the wild and no public exploit code.

Affected product: Intel(R) SGX SDK applications compiled for SGX2 enabled 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-2021-0186/ (Markdown: https://insights.sbomify.com/CVE-2021-0186/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-0186
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-0186
- OSV: https://osv.dev/vulnerability/CVE-2021-0186

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-0186/
Summaries are generated and may contain mistakes; the official description above is the record.