# CVE-2021-25356: Missing authorization in Samsung Mobile Devices

> Unprivileged apps can install arbitrary software and grant device admin permissions due to improper caller checks in Managed Provisioning.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-c8p6-443q-9mqj

## What is CVE-2021-25356?

CVE-2021-25356 is a high-severity missing authorization vulnerability in Google Android, published on 9 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An improper caller check vulnerability in Managed Provisioning prior to SMR APR-2021 Release 1 allows unprivileged application to install arbitrary application, grant device admin permission and then delete several installed application.

Weakness: CWE-863 (Incorrect Authorization), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-25356?

It affects 1 product.


Products: Google Android.

## How do I fix CVE-2021-25356?

No fix has been published for CVE-2021-25356 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-25356 being exploited?

There is no known exploitation of CVE-2021-25356 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-2021-25356 and fix it if it is affected.

What it is: CVE-2021-25356 is a high-severity missing authorization vulnerability in Google Android, published on 9 Apr 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-2021-25356 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-2021-25356/ (Markdown: https://insights.sbomify.com/CVE-2021-25356/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-25356
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-25356
- OSV: https://osv.dev/vulnerability/CVE-2021-25356

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-25356/
Summaries are generated and may contain mistakes; the official description above is the record.