# CVE-2023-21651: Incorrect Type Conversion or Cast in Core

> Memory corruption in Qualcomm Snapdragon TEE allows attackers to execute arbitrary code or escalate privileges via incorrect type casting.

- **Severity:** Critical 9.3 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/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 Aug 2023
- **Updated:** 22 Oct 2024
- **Also known as:** GHSA-99gr-hqgx-r784

## What is CVE-2023-21651?

CVE-2023-21651 is a critical memory corruption vulnerability in Qualcomm Aqt1000 Firmware, published on 8 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory Corruption in Core due to incorrect type conversion or cast in secure_io_read/write function in TEE.

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

## Which versions are affected by CVE-2023-21651?

It affects 140 products.


Products: Qualcomm Aqt1000 Firmware, Qualcomm Ar8031 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Mdm9205 Firmware, Qualcomm Qam8295p Firmware, Qualcomm Qca4004 Firmware, Qualcomm Qca6174a Firmware, Qualcomm Qca6310 Firmware, Qualcomm Qca6335 Firmware, Qualcomm Qca6390 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6420 Firmware, Qualcomm Qca6421 Firmware, Qualcomm Qca6426 Firmware, Qualcomm Qca6430 Firmware, Qualcomm Qca6431 Firmware, Qualcomm Qca6436 Firmware, Qualcomm Qca6564a Firmware and 120 more.

## How do I fix CVE-2023-21651?

No fix has been published for CVE-2023-21651 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-21651 being exploited?

There is no known exploitation of CVE-2023-21651 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-2023-21651 and fix it if it is affected.

What it is: CVE-2023-21651 is a critical memory corruption vulnerability in Qualcomm Aqt1000 Firmware, published on 8 Aug 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-2023-21651 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-2023-21651/ (Markdown: https://insights.sbomify.com/CVE-2023-21651/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21651
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21651
- OSV: https://osv.dev/vulnerability/CVE-2023-21651

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-21651/
Summaries are generated and may contain mistakes; the official description above is the record.