# CVE-2025-47355: Out-of-bounds Write in DSP Service

> An out-of-bounds write in the DSP service allows attackers to execute arbitrary code or escalate privileges via malicious IOCTL calls.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 9 Oct 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-r7m6-fx2f-99m9

## What is CVE-2025-47355?

CVE-2025-47355 is a high-severity memory corruption vulnerability in Qualcomm Fastconnect 6700 Firmware, published on 9 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory corruption while invoking remote procedure IOCTL calls.

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

## Which versions are affected by CVE-2025-47355?

It affects 27 products.


Products: Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qcc2072 Firmware, Qualcomm Sc8380xp Firmware, Qualcomm Snapdragon 7c\+ Gen 3 Compute Firmware, Qualcomm Snapdragon 8cx Gen 3 Compute Platform \(Sc8280xp-Ab\) Firmware, Qualcomm Snapdragon 8cx Gen 3 Compute Platform \(Sc8280xp-Bb\) Firmware, Qualcomm Wcd9378c Firmware, Qualcomm Wcd9380 Firmware, Qualcomm Wcd9385 Firmware, Qualcomm Wcn3660b Firmware, Qualcomm Wcn3680b Firmware, Qualcomm Wcn3980 Firmware, Qualcomm Wsa8830 Firmware, Qualcomm Wsa8835 Firmware, Qualcomm Wsa8840 Firmware, Qualcomm Wsa8845 Firmware, Qualcomm Wsa8845h Firmware, Qualcomm X2000077 Firmware and 7 more.

## How do I fix CVE-2025-47355?

No fix has been published for CVE-2025-47355 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-47355 being exploited?

There is no known exploitation of CVE-2025-47355 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-2025-47355 and fix it if it is affected.

What it is: CVE-2025-47355 is a high-severity memory corruption vulnerability in Qualcomm Fastconnect 6700 Firmware, published on 9 Oct 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-2025-47355 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-2025-47355/ (Markdown: https://insights.sbomify.com/CVE-2025-47355/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-47355
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-47355
- OSV: https://osv.dev/vulnerability/CVE-2025-47355

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-47355/
Summaries are generated and may contain mistakes; the official description above is the record.