Bluetooth Stack Vulnerability in Volkswagen MIB3 Infotainment System
CVE-2023-28909

8HIGH

Key Information:

Vendor

Preh Car Connect Gmbh (joynext Gmbh)

Status
Volkswagen Mib3 Infotainment System Mib3 Oi MQb
Vendor
CVE Published:
28 June 2025

What is CVE-2023-28909?

A flaw in the Bluetooth stack of Volkswagen's MIB3 infotainment unit arises from inadequate validation of user-supplied data. This weakness can lead to integer overflow when fragmented HCI packets are received on a channel, enabling attackers to bypass MTU checks where fragmentation is enabled. Exploiting this vulnerability could result in a buffer overflow on upper layer profiles, thereby permitting remote code execution. Affected systems include various OEM part numbers, notably the Skoda Superb III unit with part number 3V0035820, raising significant cybersecurity concerns.

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Affected Version(s)

Volkswagen MIB3 infotainment system MIB3 OI MQB 0 <= 0304

References

https://i.blackhat.com/EU-24/Presentations/EU-24-Parnishc...
https://pcacybersecurity.com/resources/advisory/vulnerabi...
technical-description
https://asrg.io/security-advisories/vulnerabilities-in-vo...
third-party-advisory

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mikhail Evdokimov from PCA Cyber Security (PCAutomotive)
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