# CVE-2020-0403: Privilege escalation in Android

> A local attacker with system privileges can escalate privileges in the TEE via an exposed test feature in the FPC TrustZone fingerprint app.

- **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 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-cgr8-5587-cqhj

## What is CVE-2020-0403?

CVE-2020-0403 is a medium-severity vulnerability in Google Android, published on 17 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the FPC TrustZone fingerprint App, there is a possible invalid command handler due to an exposed test feature. This could lead to local escalation of privilege in the TEE, with System execution privileges required. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-131252923

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2020-0403?

It affects 1 product.


Products: Google Android.

## How do I fix CVE-2020-0403?

No fix has been published for CVE-2020-0403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-0403 being exploited?

There is no known exploitation of CVE-2020-0403 in the wild and no public exploit code.

## Other vulnerabilities in Google Android

- [CVE-2026-58704](https://insights.sbomify.com/CVE-2026-58704/): Google Pixel Improper Authorization (high 8.8, exploited in the wild)
- [CVE-2025-48543](https://insights.sbomify.com/CVE-2025-48543/): Android Runtime Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2023-35674](https://insights.sbomify.com/CVE-2023-35674/): Android Framework Privilege Escalation (high 8.8, exploited in the wild)
- [CVE-2025-48595](https://insights.sbomify.com/CVE-2025-48595/): Android Framework Integer Overflow (high 8.4, exploited in the wild)
- [CVE-2024-32896](https://insights.sbomify.com/CVE-2024-32896/): Android Pixel Privilege Escalation (high 8.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-0403 and fix it if it is affected.

What it is: CVE-2020-0403 is a medium-severity vulnerability in Google Android, published on 17 Sep 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-2020-0403 in the wild and no public exploit code.

Affected product: Google Android. 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-2020-0403/ (Markdown: https://insights.sbomify.com/CVE-2020-0403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-0403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-0403
- OSV: https://osv.dev/vulnerability/CVE-2020-0403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-0403/
Summaries are generated and may contain mistakes; the official description above is the record.