# CVE-2026-21384: Out-of-bounds Write in Camera Driver

> An out-of-bounds write in the Qualcomm Snapdragon camera driver allows attackers to execute arbitrary code or escalate privileges via invalid port indices.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/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:** No
- **Published:** 6 Jul 2026
- **Updated:** 7 Jul 2026
- **Also known as:** GHSA-wj36-3pgh-3jfq

## What is CVE-2026-21384?

CVE-2026-21384 is a medium-severity memory corruption vulnerability in Qualcomm Fastconnect 6700 Firmware, published on 6 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-21384?

It affects 79 products.


Products: Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Lemans Au Lgit Firmware, Qualcomm Lemansau Firmware, Qualcomm Netrani Firmware, Qualcomm Pandeiro Firmware, Qualcomm Qam8255p Firmware, Qualcomm Qamsrv1h Firmware, Qualcomm Qamsrv1m Firmware, Qualcomm Qca6595 Firmware, Qualcomm Qca6595au Firmware, Qualcomm Qca6678aq Firmware, Qualcomm Qca6698aq Firmware, Qualcomm Qca6698au Firmware, Qualcomm Qca6797aq Firmware, Qualcomm Qcm4490 Firmware, Qualcomm Qcm5430 Firmware, Qualcomm Qcm6490 Firmware, Qualcomm Qcm8838 Firmware and 59 more.

## How do I fix CVE-2026-21384?

No fix has been published for CVE-2026-21384 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-21384 being exploited?

There is no known exploitation of CVE-2026-21384 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Fastconnect 6700 Firmware

- [CVE-2024-43047](https://insights.sbomify.com/CVE-2024-43047/): Qualcomm Multiple Chipsets Use-After-Free (high 7.8, exploited in the wild)
- [CVE-2023-21671](https://insights.sbomify.com/CVE-2023-21671/): Improper Input Validation in Core (critical 9.3)
- [CVE-2024-21464](https://insights.sbomify.com/CVE-2024-21464/): Buffer Copy Without Checking Size of Input in Data Network Stack & Connectivity (high 8.4)
- [CVE-2024-33047](https://insights.sbomify.com/CVE-2024-33047/): Buffer Over-read in Display (high 8.4)
- [CVE-2024-23360](https://insights.sbomify.com/CVE-2024-23360/): Improper Access Control in Graphics Windows (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-21384 and fix it if it is affected.

What it is: CVE-2026-21384 is a medium-severity memory corruption vulnerability in Qualcomm Fastconnect 6700 Firmware, published on 6 Jul 2026. 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-2026-21384 in the wild and no public exploit code.

Affected product: Qualcomm Fastconnect 6700 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-2026-21384/ (Markdown: https://insights.sbomify.com/CVE-2026-21384/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-21384
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-21384
- OSV: https://osv.dev/vulnerability/CVE-2026-21384

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-21384/
Summaries are generated and may contain mistakes; the official description above is the record.