# CVE-2023-21641: Permissions, Privileges, and Access Controls in Display

> A non-privileged app can alter global system brightness, causing undesired behavior on Qualcomm Snapdragon Android devices.

- **Severity:** Medium 6.6 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 4 Jul 2023
- **Updated:** 24 Oct 2024
- **Also known as:** 3261486, A-264422251, GHSA-6v47-rxr3-m26v, PUB-A-264422251

## What is CVE-2023-21641?

CVE-2023-21641 is a medium-severity vulnerability in Qualcomm Fastconnect 6900 Firmware, published on 4 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An app with non-privileged access can change global system brightness and cause undesired system behavior.

Weakness: CWE-264

## Which versions are affected by CVE-2023-21641?

It affects 15 products.


Products: Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qca6574au Firmware, Qualcomm Qca6696 Firmware, Qualcomm Sa6145p Firmware, Qualcomm Sa6150p Firmware, Qualcomm Sa6155p Firmware, Qualcomm Sa8145p Firmware, Qualcomm Sa8150p Firmware, Qualcomm Sa8155p Firmware, Qualcomm Sa8195p Firmware, Qualcomm Snapdragon 8 Gen 1 Firmware, Qualcomm Wcd9380 Firmware, Qualcomm Wsa8830 Firmware, Qualcomm Wsa8835 Firmware.

## How do I fix CVE-2023-21641?

Apply the vendor's patch.

## Is CVE-2023-21641 being exploited?

There is no known exploitation of CVE-2023-21641 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Fastconnect 6900 Firmware

- [CVE-2024-38399](https://insights.sbomify.com/CVE-2024-38399/): Use After Free in Graphics (high 8.4)
- [CVE-2024-21472](https://insights.sbomify.com/CVE-2024-21472/): Use After Free in Kernel (high 8.4)
- [CVE-2025-47405](https://insights.sbomify.com/CVE-2025-47405/): Untrusted Pointer Dereference in Camera (high 7.8)
- [CVE-2025-47358](https://insights.sbomify.com/CVE-2025-47358/): Use After Free in Secure Processor (high 7.8)
- [CVE-2025-47350](https://insights.sbomify.com/CVE-2025-47350/): Use After Free in DSP Service (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-21641 and fix it if it is affected.

What it is: CVE-2023-21641 is a medium-severity vulnerability in Qualcomm Fastconnect 6900 Firmware, published on 4 Jul 2023. 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-2023-21641 in the wild and no public exploit code.

Affected product: Qualcomm Fastconnect 6900 Firmware. 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-2023-21641/ (Markdown: https://insights.sbomify.com/CVE-2023-21641/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21641
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21641
- OSV: https://osv.dev/vulnerability/CVE-2023-21641

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-21641/
Summaries are generated and may contain mistakes; the official description above is the record.