A lack of access control in custom IPC mechanism

published 2025-06-28 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2023-32716

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits: 0; none known

The MIB3 infotainment unit used in Skoda and Volkswagen vehicles does not incorporate any privilege separation for the proprietary inter-process communication mechanism, leaving attackers with presence in the system an ability to undermine access control restrictions implemented at the operating system level. 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.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 16 mo ago (2025-06-30)

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Affected products

Preh Car Connect GmbH (JOYNEXT GmbH) Volkswagen MIB3 infotainment system MIB3 OI MQB

Classification

Weakness

CWE-284 Improper Access Control

References

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

Sources

CVE List CVE-2023-29113
NVD CVE-2023-29113

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Summary