# CVE-2026-28527: BlueKitchen BTstack < 1.8.1 AVRCP Controller GET_PLAYER_APPLICATION_SETTING_*_TEXT Handlers OOB Read

> Nearby attackers can trigger out-of-bounds reads in BTstack via crafted Bluetooth responses, leading to information disclosure and crashes.

- **Severity:** Low 2.1 (`CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Mar 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-x9fm-645r-6855

## What is CVE-2026-28527?

CVE-2026-28527 is a low-severity vulnerability in BlueKitchen GmbH BTstack, published on 30 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Controller GET_PLAYER_APPLICATION_SETTING_ATTRIBUTE_TEXT and GET_PLAYER_APPLICATION_SETTING_VALUE_TEXT handlers that allows nearby attackers to read beyond packet boundaries. Attackers can establish a paired Bluetooth Classic connection and send specially crafted VENDOR_DEPENDENT responses to trigger out-of-bounds reads, causing information disclosure and potential crashes on affected devices.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2026-28527?

It affects 1 product.


Products: Bluekitchen-Gmbh Btstack.

## How do I fix CVE-2026-28527?

No fix has been published for CVE-2026-28527 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-28527 being exploited?

There is no known exploitation of CVE-2026-28527 in the wild and no public exploit code.

## Other vulnerabilities in BlueKitchen GmbH BTstack

- [CVE-2026-28526](https://insights.sbomify.com/CVE-2026-28526/): BlueKitchen BTstack < 1.8.1 AVRCP Controller LIST_PLAYER_APPLICATION_SETTING_* Handlers OOB Read (low 2.1)
- [CVE-2026-28528](https://insights.sbomify.com/CVE-2026-28528/): BlueKitchen BTstack < 1.8.1 AVRCP Browsing Target GET_FOLDER_ITEMS Handler OOB Read / Undefined Behavior (low 2.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-28527 and fix it if it is affected.

What it is: CVE-2026-28527 is a low-severity vulnerability in BlueKitchen GmbH BTstack, published on 30 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-28527 in the wild and no public exploit code.

Affected product: BlueKitchen GmbH BTstack. 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-2026-28527/ (Markdown: https://insights.sbomify.com/CVE-2026-28527/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-28527
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28527
- OSV: https://osv.dev/vulnerability/CVE-2026-28527

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-28527/
Summaries are generated and may contain mistakes; the official description above is the record.