# CVE-2025-21486: Untrusted Pointer Dereference in DSP Service

> An attacker can exploit untrusted pointer dereference in the DSP service to achieve memory corruption and potential code execution on Qualcomm Snapdragon devices.

- **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:** Yes
- **Published:** 3 Jun 2025
- **Updated:** 26 Feb 2026
- **Also known as:** 3986528, A-400449990, ASB-A-400449990, GHSA-39fm-j66r-ffj4

## What is CVE-2025-21486?

CVE-2025-21486 is a high-severity memory corruption vulnerability in Qualcomm Fastconnect 6900 Firmware, published on 3 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory corruption during dynamic process creation call when client is only passing address and length of shell binary.

Weakness: CWE-822 (Untrusted Pointer Dereference)

## Which versions are affected by CVE-2025-21486?

It affects 31 products.


Products: Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qmp1000 Firmware, Qualcomm Sm8735 Firmware, Qualcomm Sm8750 Firmware, Qualcomm Sm8750p Firmware, Qualcomm Snapdragon W5\+ Gen 1 Wearable Platform Firmware, Qualcomm Sw5100 Firmware, Qualcomm Sw5100p Firmware, Qualcomm Sxr2230p Firmware, Qualcomm Sxr2250p Firmware, Qualcomm Sxr2330p Firmware, Qualcomm Wcd9378 Firmware, Qualcomm Wcd9380 Firmware, Qualcomm Wcd9385 Firmware, Qualcomm Wcd9395 Firmware, Qualcomm Wcn3660b Firmware, Qualcomm Wcn3680b Firmware, Qualcomm Wcn3980 Firmware, Qualcomm Wcn3988 Firmware and 11 more.

## How do I fix CVE-2025-21486?

Apply the vendor's patch.

## Is CVE-2025-21486 being exploited?

There is no known exploitation of CVE-2025-21486 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-2025-21486 and fix it if it is affected.

What it is: CVE-2025-21486 is a high-severity memory corruption vulnerability in Qualcomm Fastconnect 6900 Firmware, published on 3 Jun 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-2025-21486 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-2025-21486/ (Markdown: https://insights.sbomify.com/CVE-2025-21486/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-21486
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-21486
- OSV: https://osv.dev/vulnerability/CVE-2025-21486

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-21486/
Summaries are generated and may contain mistakes; the official description above is the record.