# CVE-2025-21004: Missing authorization in Samsung Mobile Devices

> Local attackers can power off Samsung Galaxy Watch devices due to improper intent verification in the System UI broadcast receiver.

- **Severity:** Medium 6.2 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **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:** 8 Jul 2025
- **Updated:** 8 Jul 2025
- **Also known as:** GHSA-8xj4-3gr5-xw39

## What is CVE-2025-21004?

CVE-2025-21004 is a medium-severity missing authorization vulnerability in Samsung Mobile Devices, published on 8 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper verification of intent by broadcast receiver in System UI for Galaxy Watch prior to SMR Jul-2025 Release 1 allows local attackers to power off the device.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature)

## Which versions are affected by CVE-2025-21004?

It affects 1 product.


Products: Samsung Wear Os.

## How do I fix CVE-2025-21004?

No fix has been published for CVE-2025-21004 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-21004 being exploited?

There is no known exploitation of CVE-2025-21004 in the wild and no public exploit code.

## Other vulnerabilities in Samsung Mobile Devices

- [CVE-2025-20946](https://insights.sbomify.com/CVE-2025-20946/): Security feature bypass in Samsung Mobile Devices (high 8.8)
- [CVE-2025-20984](https://insights.sbomify.com/CVE-2025-20984/): Missing authorization in Samsung Mobile Devices (medium 6.8)
- [CVE-2025-20997](https://insights.sbomify.com/CVE-2025-20997/): Misconfiguration in Samsung Mobile Devices (medium 6.2)
- [CVE-2025-20910](https://insights.sbomify.com/CVE-2025-20910/): Missing authorization in Samsung Mobile Devices (medium 6.2)
- [CVE-2025-20912](https://insights.sbomify.com/CVE-2025-20912/): Information disclosure in Samsung Mobile Devices (medium 6.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-21004 and fix it if it is affected.

What it is: CVE-2025-21004 is a medium-severity missing authorization vulnerability in Samsung Mobile Devices, published on 8 Jul 2025. 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-2025-21004 in the wild and no public exploit code.

Affected product: Samsung Mobile Devices. 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-2025-21004/ (Markdown: https://insights.sbomify.com/CVE-2025-21004/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-21004
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-21004
- OSV: https://osv.dev/vulnerability/CVE-2025-21004

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-21004/
Summaries are generated and may contain mistakes; the official description above is the record.