# CVE-2021-38365: Information disclosure in n/a

> Remote attackers can recover speech signals from desktop speaker LEDs using optical sensors, compromising audio privacy.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Aug 2021
- **Updated:** 4 Jul 2026
- **Also known as:** GHSA-c73h-35x4-2493

## What is CVE-2021-38365?

CVE-2021-38365 is a low-severity vulnerability in n/a, published on 10 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Winner (aka ToneWinner) desktop speakers through 2021-08-09 allow remote attackers to recover speech signals from the power-indicator LED via a telescope and an electro-optical sensor, aka a "Glowworm" attack.

## Which versions are affected by CVE-2021-38365?

It affects 1 product.


Products: Tonewinner Winner Desktop Speakers Firmware.

## How do I fix CVE-2021-38365?

No fix has been published for CVE-2021-38365 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-38365 being exploited?

There is no known exploitation of CVE-2021-38365 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-38365 and fix it if it is affected.

What it is: CVE-2021-38365 is a low-severity vulnerability in n/a, published on 10 Aug 2021. 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-2021-38365 in the wild and no public exploit code.

Affected product: n/a. 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-2021-38365/ (Markdown: https://insights.sbomify.com/CVE-2021-38365/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-38365
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-38365
- OSV: https://osv.dev/vulnerability/CVE-2021-38365

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-38365/
Summaries are generated and may contain mistakes; the official description above is the record.