# CVE-2023-28907: A lack of access restrictions on internal memory regions

> Attackers with main OS access can compromise the CAN processing core due to lack of memory isolation in MIB3 infotainment systems.

- **Severity:** Medium 6.7 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **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-5jg2-cjvx-wcpp

## What is CVE-2023-28907?

CVE-2023-28907 is a medium-severity missing authorization 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

There is no memory isolation between CPU cores of the MIB3 infotainment. This fact allows an attacker with access to the main operating system to compromise the CPU core responsible for CAN message processing.
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-284 (Improper Access Control)

## Which versions are affected by CVE-2023-28907?


## How do I fix CVE-2023-28907?

No fix has been published for CVE-2023-28907 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28907 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-28907 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28907 and fix it if it is affected.

What it is: CVE-2023-28907 is a medium-severity missing authorization 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-28907 exists.

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-2023-28907/ (Markdown: https://insights.sbomify.com/CVE-2023-28907/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28907
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28907
- OSV: https://osv.dev/vulnerability/CVE-2023-28907

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-28907/
Summaries are generated and may contain mistakes; the official description above is the record.