# CVE-2025-21429: Buffer Over-read in WLAN Host

> A buffer over-read in Qualcomm WLAN firmware allows attackers to cause memory corruption, potentially leading to code execution or denial of service.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Apr 2025
- **Updated:** 26 Feb 2026
- **Also known as:** 3960857, A-388048166, ASB-A-388048166, GHSA-mrr6-w84f-5xh8

## What is CVE-2025-21429?

CVE-2025-21429 is a high-severity memory corruption vulnerability in Qualcomm Apq8017 Firmware, published on 7 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Memory corruption occurs while connecting a STA to an AP and initiating an ADD TS request.

Weakness: CWE-126 (Buffer Over-read)

## Which versions are affected by CVE-2025-21429?

It affects 182 products.


Products: Qualcomm 9206 Lte Modem Firmware, Qualcomm Apq8017 Firmware, Qualcomm Apq8064au Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar8035 Firmware, Qualcomm C-V2x 9150 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Csrb31024 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Mdm9250 Firmware, Qualcomm Mdm9628 Firmware, Qualcomm Mdm9640 Firmware, Qualcomm Mdm9650 Firmware, Qualcomm Msm8996au Firmware, Qualcomm Qam8255p Firmware and 162 more.

## How do I fix CVE-2025-21429?

Apply the vendor's patch.

## Is CVE-2025-21429 being exploited?

There is no known exploitation of CVE-2025-21429 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Apq8017 Firmware

- [CVE-2025-47320](https://insights.sbomify.com/CVE-2025-47320/): Out-of-bounds Write in Audio (high 7.8)
- [CVE-2016-10408](https://insights.sbomify.com/CVE-2016-10408/): Improper Access Control in Core. (high 7.8)
- [CVE-2018-11816](https://insights.sbomify.com/CVE-2018-11816/): Use After Free in Video (high 7.8)
- [CVE-2025-21428](https://insights.sbomify.com/CVE-2025-21428/): Buffer Over-read in WLAN Host (high 7.5)
- [CVE-2017-18153](https://insights.sbomify.com/CVE-2017-18153/): Use After Free in WLAN (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-21429 and fix it if it is affected.

What it is: CVE-2025-21429 is a high-severity memory corruption vulnerability in Qualcomm Apq8017 Firmware, published on 7 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-21429 in the wild and no public exploit code.

Affected product: Qualcomm Apq8017 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-2025-21429/ (Markdown: https://insights.sbomify.com/CVE-2025-21429/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-21429
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-21429
- OSV: https://osv.dev/vulnerability/CVE-2025-21429

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-21429/
Summaries are generated and may contain mistakes; the official description above is the record.