# CVE-2023-28911: Arbitrary Channel Disconnection Resulting in Denial of Service

> Attackers can cause denial of service on connected clients via Bluetooth stack flaw in MIB3 infotainment systems.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Jun 2025
- **Updated:** 30 Jun 2025
- **Also known as:** GHSA-x974-v89x-m6c8

## What is CVE-2023-28911?

CVE-2023-28911 is a medium-severity denial of service vulnerability in Preh Car Connect GmbH (JOYNEXT GmbH) Volkswagen MIB3 infotainment system MIB3 OI MQB, published on 28 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A specific flaw exists within the Bluetooth stack of the MIB3 infotainment. The issue results from the lack of proper validation of user-supplied data, which can result in an arbitrary channel disconnection. An attacker can leverage this vulnerability to cause a denial-of-service attack for every connected client of the infotainment device.
The vulnerability was originally discovered in Skoda Superb III car with MIB3 infotainment unit OEM part number 3V0035820. The list of affected MIB3 OEM part numbers is provided in the referenced resources.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-28911?


## How do I fix CVE-2023-28911?

No fix has been published for CVE-2023-28911 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28911 being exploited?

There is no known exploitation of CVE-2023-28911 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28911 and fix it if it is affected.

What it is: CVE-2023-28911 is a medium-severity denial of service vulnerability in Preh Car Connect GmbH (JOYNEXT GmbH) Volkswagen MIB3 infotainment system MIB3 OI MQB, published on 28 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-2023-28911 in the wild and no public exploit code.

Affected product: Preh Car Connect GmbH (JOYNEXT GmbH) Volkswagen MIB3 infotainment system MIB3 OI MQB. 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-2023-28911/ (Markdown: https://insights.sbomify.com/CVE-2023-28911/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28911
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28911
- OSV: https://osv.dev/vulnerability/CVE-2023-28911

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-28911/
Summaries are generated and may contain mistakes; the official description above is the record.