# CVE-2023-21638: Incorrect Type Conversion or Cast in Video

> Memory corruption in Qualcomm Snapdragon video APIs allows attackers to execute arbitrary code or escalate privileges via incorrect type conversion.

- **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:** 4 Jul 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-v79h-64cf-gw4x

## What is CVE-2023-21638?

CVE-2023-21638 is a medium-severity memory corruption vulnerability in Qualcomm Aqt1000 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

Memory corruption in Video while calling APIs with different instance ID than the one received in initialization.

Weakness: CWE-704 (Incorrect Type Conversion or Cast)

## Which versions are affected by CVE-2023-21638?

It affects 36 products.


Products: Qualcomm Aqt1000 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6420 Firmware, Qualcomm Qca6426 Firmware, Qualcomm Qca6430 Firmware, Qualcomm Qca6436 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 Sd855 Firmware and 16 more.

## How do I fix CVE-2023-21638?

No fix has been published for CVE-2023-21638 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-21638 being exploited?

There is no known exploitation of CVE-2023-21638 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Aqt1000 Firmware

- [CVE-2025-21479](https://insights.sbomify.com/CVE-2025-21479/): Qualcomm Multiple Chipsets Incorrect Authorization (high 8.6, exploited in the wild)
- [CVE-2025-21480](https://insights.sbomify.com/CVE-2025-21480/): Qualcomm Multiple Chipsets Incorrect Authorization (high 8.6, exploited in the wild)
- [CVE-2023-28562](https://insights.sbomify.com/CVE-2023-28562/): Buffer Copy Without Checking Size of Input in QESL (critical 9.8)
- [CVE-2022-40514](https://insights.sbomify.com/CVE-2022-40514/): Buffer copy without checking size of input in WLAN Firmware (critical 9.8)
- [CVE-2022-22096](https://insights.sbomify.com/CVE-2022-22096/): Memory corruption in Snapdragon Connectivity, Snapdragon Mobile (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-21638 and fix it if it is affected.

What it is: CVE-2023-21638 is a medium-severity memory corruption vulnerability in Qualcomm Aqt1000 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-2023-21638 in the wild and no public exploit code.

Affected product: Qualcomm Aqt1000 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-2023-21638/ (Markdown: https://insights.sbomify.com/CVE-2023-21638/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21638
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21638
- OSV: https://osv.dev/vulnerability/CVE-2023-21638

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-21638/
Summaries are generated and may contain mistakes; the official description above is the record.