CVE-2023-28908 Integer Overflow in Non-Fragmented Data Reception
An integer overflow in the Bluetooth stack allows attackers to cause denial of service or potentially execute code on affected vehicle infotainment systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-28908?
CVE-2023-28908 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, with no action from the victim.
Official description
A specific flaw exists within the Bluetooth stack of the MIB3 infotainment. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow when receiving non-fragmented HCI packets on a channel. 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-190
Which versions are affected by CVE-2023-28908?
How do I fix CVE-2023-28908?
No fix has been published for CVE-2023-28908 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-28908 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-28908 exists.
Sources
Also known as GHSA-wm7p-28g9-67f7.