# CVE-2026-57546: Buffer Over-read in WLAN HAL

> A buffer over-read in the WLAN HAL allows attackers to cause a transient denial of service via a zero-sized configuration override.

- **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:** No
- **Published:** 6 Oct 2026
- **Updated:** 6 Oct 2026
- **Also known as:** GHSA-5982-f562-35cj

## What is CVE-2026-57546?

CVE-2026-57546 is a high-severity denial of service vulnerability in Qualcomm Fastconnect 7800 Firmware, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Transient DOS when processing a continuous receive command with a zero-sized global configuration override.

Weakness: CWE-126 (Buffer Over-read)

## Which versions are affected by CVE-2026-57546?

It affects 14 products.


Products: Qualcomm Congo Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Fastconnect 8800 Mobile Connectivity System Firmware, Qualcomm Orne Firmware, Qualcomm Pandeiro Firmware, Qualcomm Sm8950 Firmware, Qualcomm Sm8950p Firmware, Qualcomm Sm8975 Firmware, Qualcomm Sm8975p Firmware, Qualcomm Wcd9378 Firmware, Qualcomm Wcd9395 Firmware, Qualcomm Wcn7880 Firmware, Qualcomm Wcn7881 Firmware, Qualcomm Wcn8841 Firmware.

## How do I fix CVE-2026-57546?

No fix has been published for CVE-2026-57546 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-57546 being exploited?

There is no known exploitation of CVE-2026-57546 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Fastconnect 7800 Firmware

- [CVE-2026-57537](https://insights.sbomify.com/CVE-2026-57537/): Use After Free in DSP Service (high 7.8)
- [CVE-2026-25273](https://insights.sbomify.com/CVE-2026-25273/): Out-of-bounds Write in Camera Driver (medium 6.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57546 and fix it if it is affected.

What it is: CVE-2026-57546 is a high-severity denial of service vulnerability in Qualcomm Fastconnect 7800 Firmware, published on 6 Oct 2026. 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-2026-57546 in the wild and no public exploit code.

Affected product: Qualcomm Fastconnect 7800 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-2026-57546/ (Markdown: https://insights.sbomify.com/CVE-2026-57546/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57546
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57546
- OSV: https://osv.dev/vulnerability/CVE-2026-57546

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57546/
Summaries are generated and may contain mistakes; the official description above is the record.