Bypass of secure boot process
Priority MEDIUM 57CWE-120Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
A logic flaw leading to a RAM buffer overflow in the bootloader component of the MIB3 infotainment unit allows an attacker with physical access to the MIB3 ECU to bypass firmware signature verification and run arbitrary code in the infotainment system at boot process.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00323 25th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Preh Car Connect GmbH (JOYNEXT GmbH) | Volkswagen MIB3 infotainment system MIB3 OI MQB | up to 0304 | — | No fix listed | CNA |
- Volkswagen MIB3 infotainment system MIB3 OI MQB VendorPreh Car Connect GmbH (JOYNEXT GmbH) Affected up to 0304 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-28904
- 2026-10-03 Alias added: GHSA-gqwg-33mc-9c6j
References
More Preh Car Connect GmbH (JOYNEXT GmbH) vulnerabilities
- TI-2023-13402 Integer Overflow Leading to MTU Bypass CVSS 3.1HIGH 8.0
- TI-2023-13398 Heap buffer overflow in picserver CVSS 3.1HIGH 8.0
- TI-2023-13399 Command injection in networking service CVSS 3.1HIGH 7.8
- TI-2023-13400 A lack of access restrictions on internal memory regions CVSS 3.1MEDIUM 6.7
- TI-2023-13401 Integer Overflow in Non-Fragmented Data Reception CVSS 3.1MEDIUM 5.4
- TI-2023-13396 Integer overflow in Preh Car Connect GmbH (JOYNEXT GmbH) Volkswagen MIB3 infotainment… CVSS 3.1LOW 3.3
Sources
- CVE-2023-28904 · CVE Program
- CVE-2023-28904 · NVD
- FIRST EPSS
- GHSA-gqwg-33mc-9c6j · GitHub Advisory Database · CC BY 4.0
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