# CVE-2023-28912: Cleartext Phonebook Information

> Attackers with physical access or code execution can read cleartext phonebook data from the MIB3 infotainment unit.

- **Severity:** Medium 5.7 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A: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:** 28 Jun 2025
- **Updated:** 30 Jun 2025
- **Also known as:** GHSA-rv2r-wgv2-j88m

## What is CVE-2023-28912?

CVE-2023-28912 is a medium-severity 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, and only if a user opens a file or follows a link.

### Official description

The MIB3 unit stores the synchronized phone contact book in clear-text, allowing an attacker with either code execution privilege on the system or physical access to the system to obtain vehicle owner's contact data.
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-312 (Cleartext Storage of Sensitive Information)

## Which versions are affected by CVE-2023-28912?


## How do I fix CVE-2023-28912?

No fix has been published for CVE-2023-28912 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-28912 being exploited?

There is no known exploitation of CVE-2023-28912 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28912 and fix it if it is affected.

What it is: CVE-2023-28912 is a medium-severity 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, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-28912 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-2023-28912/ (Markdown: https://insights.sbomify.com/CVE-2023-28912/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28912
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28912
- OSV: https://osv.dev/vulnerability/CVE-2023-28912

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-28912/
Summaries are generated and may contain mistakes; the official description above is the record.